ASTM A193 B16 Bolts Manufacturer, Supplier & Exporter in India
ASTM A193 Grade B16 Stud Bolts | A193 B16 Heavy Hex Bolts | Alloy Steel B16 Hex Bolts | Chromium Molybdenum Vanadium High-Temperature Bolting | A194 Grade 4 Nuts Supplier
Jade Alloys is a certified ASTM A193 B16 Bolts manufacturer, supplier and exporter headquartered in Mumbai, India, with a global distribution network spanning the USA, Middle East, Europe, Southeast Asia and Africa. With over two decades of manufacturing expertise in alloy steel fasteners and high-performance bolting materials, we are one of India’s most trusted sources for ASTM A193 Grade B16 fasteners used in critical high-temperature, high-pressure service environments.
ASTM A193 Grade B16 is a chromium-molybdenum-vanadium (Cr-Mo-V) alloy steel specification designed for extreme bolting applications in petroleum refining, power generation, pressure vessels, heat exchangers and chemical processing industries. Unlike Grade B7, the addition of vanadium in B16 provides superior creep resistance and retained strength at elevated temperatures up to 1000°F (540°C), making it the preferred choice for steam turbines, reactors and high-heat critical joints.
Our ASTM A193 B16 Bolts are dual-certified under ASTM and ASME codes, produced from premium Chromium-Molybdenum-Vanadium alloy steel that is quenched and tempered for maximum mechanical performance. We manufacture the full range including B16 Stud Bolts, B16 Heavy Hex Bolts, B16 Hex Bolts, B16 Threaded Rods, and B16 Anchor Bolts in inch and metric sizes, with custom lengths, coatings and thread configurations available on request.
ASTM A193 B16 Bolts – At a Glance
| Property | Details |
|---|---|
| Material | Chromium-Molybdenum-Vanadium (Cr-Mo-V) Alloy Steel |
| Standard | ASTM A193 / ASME SA193 Grade B16 |
| Heat Treatment | Quenched & Tempered at 860°C minimum |
| Max Service Temperature | Up to 1000°F / 540°C (creep resistance up to 450°C for continuous use) |
| Tensile Strength (≤2.5″) | 125 ksi (860 MPa) minimum |
| Yield Strength (≤2.5″) | 105 ksi (725 MPa) minimum |
| Hardness Max | 321 HBW / 35 HRC |
| Compatible Nut | ASTM A194 Grade 4 (also Grade 16) |
| Compatible Washer | ASTM F436 |
| Thread Form | ASME B1.1 (2A/3A) Inch UNC; ASME B1.13M (6h) Metric Coarse |
| Size Range (Inch) | 1/4″ to 4″ diameter; custom larger sizes available |
| Size Range (Metric) | M6 to M100 (and above on request) |
| Certification | Dual ASTM & ASME Certified; PED 97/23/EC; NACE MR0103/MR0175 |
| Product Origin | Made in India – Mumbai Manufacturing Facility |
Types of ASTM A193 Grade B16 Fasteners
Jade Alloys stocks and manufactures the following ASTM A193 B16 fastener types to serve a wide range of industrial bolting requirements:
ASTM A193 B16 Socket Heads
ASTM A193 B16 Double End Studs
ASTM A193 B16 CSK Screws
ASTM A193 B16 Set Screws
ASTM A193 B16 Stud Bolts
ASTM A193 B16 Hex Bolts
ASTM A193 B16 Anchor Rods
ASTM A193 B16 Threaded Rod
ASTM A193 B16 Round Bars
ASTM A193 B16 Heavy Hex Bolts
ASTM A193 B16 U Bolts
ASTM A193 B16 Bolts – Full Specification
| Standard / Parameter | Detail |
|---|---|
| ASTM / ASME Designation | ASTM A193 Grade B16 / ASME SA193 Grade B16 |
| Studs Dimensions Standard | ASME B18.2.1, B18.3 |
| Thread Configuration | ASME B1.1 2A/3A Inch Unified (UNC/UNF) & B1.13M 6h Metric Coarse Threads |
| Melt Origin | South America, East Europe, Japan, South Korea |
| Product Origin | Made in India (Mumbai Manufacturing Plant) |
| Dual Certification | ASTM A193 & ASME SA193 |
| Additional Certifications | PED 97/23/EC Certified; Merkblatt AD 2000 W2 Certified |
| Mandatory Requirements | Free from Mercury & Radioactive Contamination |
| Compliance Standards | NACE MR0103 / MR0175 / ISO 15156 |
| International Standards Covered | ASTM, ASME, JIS, API, DIN, EN, BS, ISO |
| Custom Lengths Available | Yes – per customer drawing or PO specification |
For matching nuts, ASTM A194 Grade 7 Nuts and Grade 4 Nuts are the recommended pairing for B16 bolts
Chemical Composition of ASTM A193 Grade B16 Fasteners
The following table lists the chemical composition requirements for ASTM A193 Grade B16 alloy steel as specified by ASTM International. The Vanadium content is the defining element that differentiates B16 from Grade B7:
| Element | Min % | Max % | Note |
|---|---|---|---|
| Carbon (C) | 0.36 | 0.47 | Controls strength & hardenability |
| Manganese (Mn) | 0.45 | 0.70 | Improves hardenability |
| Silicon (Si) | 0.15 | 0.35 | Deoxidizer |
| Phosphorus (P) | — | 0.035 max | Impurity limit |
| Sulfur (S) | — | 0.040 max | Impurity limit |
| Chromium (Cr) | 0.80 | 1.15 | Corrosion & oxidation resistance |
| Molybdenum (Mo) | 0.50 | 0.65 | High-temp strength retention |
| Vanadium (V) | 0.25 | 0.35 | Creep resistance at elevated temps |
| Aluminium (Al) | — | 0.015 max | Grain refinement control |
| Nickel (Ni) | — | Not specified | — |
ASTM A193 Grade B16 Mechanical Properties
Inch (Imperial) Product – Mechanical Properties
| Diameter (Inch) | Min. Tempering Temp. | Tensile Strength Min. | Yield Strength Min. | Elongation Min. | Reduction of Area Min. | Hardness Max |
|---|---|---|---|---|---|---|
| Up to 2½” | 1200°F (650°C) | 125 ksi (860 MPa) | 105 ksi (725 MPa) | 18% | 50% | 321 HBW / 35 HRC |
| Over 2½” to 4″ | 1200°F (650°C) | 110 ksi (760 MPa) | 95 ksi (655 MPa) | 17% | 45% | 321 HBW / 35 HRC |
| Over 4″ to 7″ | 1200°F (650°C) | 100 ksi (690 MPa) | 85 ksi (585 MPa) | 16% | 45% | 321 HBW / 35 HRC |
Metric Product – Mechanical Properties
| Diameter (Metric) | Min. Tempering Temp. | Tensile Strength Min. | Yield Strength Min. | Elongation Min. | Reduction of Area Min. | Hardness Max |
|---|---|---|---|---|---|---|
| M64 and under | 650°C | 860 MPa | 725 MPa | 18% | 50% | 321 HBW / 35 HRC |
| Over M64 to M100 | 650°C | 760 MPa | 655 MPa | 17% | 45% | 321 HBW / 35 HRC |
| Over M100 to M180 | 650°C | 690 MPa | 585 MPa | 16% | 45% | 321 HBW / 35 HRC |
ASTM A193 B16 vs B7 – Detailed Comparison
A common question from engineers and procurement teams is: when should you specify B16 over B7? While both are high-strength alloy steel bolting materials under ASTM A193, they serve different temperature regimes. The table below provides a clear technical comparison:
| Property | A193 Grade B7 | A193 Grade B16 |
|---|---|---|
| Base Material | Chromium-Molybdenum (Cr-Mo) | Chromium-Molybdenum-Vanadium (Cr-Mo-V) |
| Key Alloying Element | Molybdenum | Vanadium (differentiating element) |
| UNS Designation | G41400 (4140/4142) | K14072 |
| Max Service Temp (continuous) | ~800°F (427°C) | ~1000°F (540°C) |
| Tensile Strength ≤2.5″ | 125 ksi (860 MPa) | 125 ksi (860 MPa) |
| Yield Strength ≤2.5″ | 105 ksi (725 MPa) | 105 ksi (725 MPa) |
| Creep Resistance | Moderate | Superior – due to Vanadium |
| High-Temp Strength Retention | Begins to decline above 427°C | Retained up to 540°C |
| Heat Treatment | Quenched & Tempered | Quenched & Tempered at 860°C min. |
| Hardness Max | 321 HBW / 35 HRC | 321 HBW / 35 HRC |
| Compatible Nut | A194 Grade 2H (most common) | A194 Grade 4 or Grade 16 |
| Cost Relative | Lower | Higher (Vanadium premium) |
| Typical Use | General high-pressure, flanges, valves | Steam turbines, reactors, high-heat vessels |
| Preferred Standard | ASTM A193 B7 | ASTM A193 B16 |
Engineer’s Recommendation: Use ASTM A193 B16 when operating temperatures exceed 800°F (427°C) or when creep and stress relaxation are critical design considerations. For standard pressure vessel service below 427°C, Grade B7 is typically the cost-effective choice.
ASTM A193 B16 Temperature & Pressure Service Range
ASTM A193 Grade B16 alloy steel bolts are specifically engineered for combined high-temperature and high-pressure service. Below are the typical design parameters recognized across petrochemical, power, and process engineering standards:
| Parameter | Value / Range |
|---|---|
| Maximum Continuous Service Temperature | Up to 1000°F (540°C) |
| Temperature for Creep Resistance | Effective up to 450°C per many process codes |
| Minimum Operating Temperature | Not designed for sub-zero cryogenic service (use A320 L7 for low-temp) |
| Pressure Vessel Service | ASME Section VIII Division 1 & 2; API flanges Class 150 to 2500 |
| Bolt Stress Allowable (ASME B31.3) | Per Section II, Part D tables – varies by temperature |
| Typical Flange Class Applications | ANSI/ASME B16.5 Class 600 to 2500; ASME B16.47 large-bore flanges |
| Heat Exchanger Service | TEMA R/C/B Class shells and bonnets; ASME Section VIII |
| Steam Turbine Casing Bolting | Yes – primary use case due to creep resistance |
| Reactor & Pressure Vessel | ASME Section III Class 1 components (with appropriate certifications) |
| Thread Seizing / Galling Risk | Low – quenched & tempered surface minimizes galling vs. B8 austenitic |
ASTM A193 B16 Heavy Hex Bolts – Dimension Chart (Metric)
All dimensions in millimeters unless otherwise stated.
| Nominal Size | D Max | D Min | H Max | H Min | F Max | F Min | C Max | C Min |
|---|---|---|---|---|---|---|---|---|
| M10 | 10.00 | 9.78 | 6.63 | 6.17 | 17.00 | 15.73 | 18.48 | 17.77 |
| M12 | 12.00 | 11.73 | 7.76 | 4.24 | 19.00 | 17.73 | 20.78 | 20.03 |
| M14 | 14.00 | 13.73 | 9.09 | 8.51 | 22.00 | 20.67 | 24.25 | 23.35 |
| M16 | 16.00 | 15.73 | 10.32 | 9.68 | 24.00 | 23.67 | 27.71 | 26.75 |
| M20 | 20.00 | 19.67 | 12.88 | 12.12 | 30.00 | 29.16 | 34.64 | 32.95 |
| M24 | 24.00 | 23.67 | 15.44 | 14.56 | 36.00 | 35.00 | 41.57 | 39.55 |
| M30 | 30.00 | 29.67 | 19.48 | 17.92 | 46.00 | 45.00 | 53.12 | 50.85 |
| M36 | 36.00 | 35.61 | 23.38 | 21.63 | 55.00 | 53.80 | 63.51 | 60.79 |
| M42 | 42.00 | 41.38 | 26.97 | 25.03 | 65.00 | 62.90 | 75.06 | 71.71 |
| M48 | 48.00 | 47.38 | 31.07 | 28.93 | 75.00 | 72.60 | 86.60 | 82.76 |
| M56 | 56.00 | 55.26 | 36.20 | 33.80 | 85.00 | 82.20 | 98.15 | 93.71 |
| M64 | 64.00 | 63.26 | 41.32 | 38.68 | 95.00 | 91.80 | 109.70 | 104.65 |
| M72 | 72.00 | 71.26 | 46.45 | 43.55 | 105.00 | 101.40 | 121.24 | 115.60 |
| M80 | 80.00 | 79.26 | 51.58 | 48.42 | 115.00 | 111.00 | 132.72 | 126.54 |
| M90 | 90.00 | 89.13 | 57.74 | 54.26 | 130.00 | 125.50 | 150.11 | 143.07 |
| M100 | 100.00 | 99.13 | 63.90 | 60.10 | 145.00 | 140.00 | 167.43 | 159.60 |
SA193 B16 Stud Bolts – Heavy Hex Dimension Chart (Inch)
All dimensions in inches. Thread Lengths (T): <6″ column applies to bolts 6 inches and shorter; >6″ applies to bolts over 6 inches.
| Dia (D) | Body D Max | Body D Min | Flats F Max | Flats F Min | Corners C Max | Corners C Min | Head H Max | Head H Min | Thread <6″ | Thread >6″ |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 0.515 | 0.482 | 0.875 | 0.850 | 1.010 | 0.969 | 0.364 | 0.302 | 1.25 | 1.50 |
| 5/8 | 0.642 | 0.605 | 1.062 | 1.031 | 1.227 | 1.175 | 0.444 | 0.378 | 1.50 | 1.75 |
| 3/4 | 0.768 | 0.729 | 1.250 | 1.212 | 1.443 | 1.383 | 0.524 | 0.455 | 1.75 | 2.00 |
| 7/8 | 0.895 | 0.852 | 1.438 | 1.394 | 1.660 | 1.589 | 0.604 | 0.531 | 2.00 | 2.25 |
| 1 | 1.022 | 0.976 | 1.625 | 1.575 | 1.876 | 1.796 | 0.700 | 0.591 | 2.25 | 2.50 |
| 1-1/8 | 1.149 | 1.098 | 1.812 | 1.756 | 2.093 | 2.002 | 0.780 | 0.658 | 2.50 | 2.75 |
| 1-1/4 | 1.277 | 1.223 | 2.000 | 1.938 | 2.309 | 2.209 | 0.876 | 0.749 | 2.75 | 3.00 |
| 1-3/8 | 1.404 | 1.345 | 2.188 | 2.119 | 2.526 | 2.416 | 0.940 | 0.810 | 3.00 | 3.25 |
| 1-1/2 | 1.531 | 1.470 | 2.375 | 2.300 | 2.742 | 2.622 | 1.036 | 0.902 | 3.25 | 3.50 |
| 1-3/4 | 1.785 | 1.716 | 2.750 | 2.662 | 3.175 | 3.035 | 1.196 | 1.054 | 3.75 | 4.00 |
| 2 | 2.039 | 1.964 | 3.125 | 3.025 | 3.608 | 3.449 | 1.388 | 1.175 | 4.25 | 4.50 |
| 2-1/4 | 2.305 | 2.214 | 3.500 | 3.388 | 4.041 | 3.862 | 1.548 | 1.327 | 4.75 | 5.00 |
| 2-1/2 | 2.559 | 2.461 | 3.875 | 3.750 | 4.474 | 4.275 | 1.708 | 1.479 | 5.25 | 5.50 |
| 2-3/4 | 2.827 | 2.711 | 4.250 | 4.112 | 4.907 | 4.688 | 1.869 | 1.632 | 5.75 | 6.00 |
| 3 | 3.081 | 2.961 | 4.625 | 4.475 | 5.340 | 5.102 | 2.060 | 1.815 | 6.25 | 6.50 |
ASTM A193 B16 Bolt Torque Chart
Recommended Tightening Torque – ft-lbs (100% Final Torque)
The following torque values are for lubricated fasteners with A194 Grade 4 nuts. Apply torque in three stages: 30% initial, 70% intermediate, 100% final. Always verify with a torque wrench calibrated per ISO 6789.
| Bolt Diameter | 30% Initial Torque (ft-lbs) | 70% Torque (ft-lbs) | 100% Final Torque (ft-lbs) | 100% Final Torque (Nm) |
|---|---|---|---|---|
| 1/2″ | 17 | 39 | 55 | 75 |
| 9/16″ | 24 | 55 | 80 | 108 |
| 5/8″ | 33 | 77 | 110 | 149 |
| 3/4″ | 59 | 137 | 195 | 264 |
| 7/8″ | 93 | 217 | 310 | 420 |
| 1″ | 140 | 325 | 465 | 630 |
| 1-1/8″ | 205 | 480 | 685 | 929 |
| 1-1/4″ | 288 | 672 | 960 | 1302 |
| 1-3/8″ | 391 | 915 | 1305 | 1769 |
| 1-1/2″ | 518 | 1208 | 1725 | 2339 |
| 1-3/4″ | 840 | 1960 | 2800 | 3796 |
| 2″ | 1280 | 2985 | 4265 | 5783 |
| 2-1/4″ | 1850 | 4315 | 6165 | 8359 |
| 2-1/2″ | 2565 | 5985 | 8550 | 11592 |
| 2-3/4″ | 3121 | 7282 | 10400 | 14101 |
| 3″ | 4080 | 9520 | 13600 | 18439 |
Note: Torque values assume K = 0.20 (standard lubricated condition). Adjust K factor for dry (K=0.20), lightly oiled (K=0.15), or PTFE/anti-seize coated (K=0.12) conditions. Always consult the engineering specification for project-specific torque values.
ASTM A193 B16 Stud Bolts Hardness Chart
| Grade & Class | Diameter Range | Tensile Strength Min. | Yield Strength Min. | Elongation Min. | Reduction of Area Min. | Hardness Max (Brinell) | Hardness Max (Rockwell) |
|---|---|---|---|---|---|---|---|
| B16 Studs | Up to 2-1/2″ | 125 ksi | 105 ksi | 18% | 50% | 321 HBW | C35 |
| B16 Studs | Over 2-1/2″ to 4″ | 110 ksi | 95 ksi | 17% | 45% | 321 HBW | C35 |
| B16 Studs | Over 4″ to 7″ | 100 ksi | 85 ksi | 16% | 45% | 321 HBW | C35 |
ASTM A193 B16 Bolt Weight Chart (Approximate)
Approximate weights per piece for standard A193 B16 Hex Bolts in alloy steel. Actual weight varies by length, thread type, and head configuration. Contact Jade Alloys for precise weight calculations for your order.
| Nominal Diameter | Thread (TPI) | Length (inches) | Approx. Weight per piece (kg) | Pieces per 50 kg |
|---|---|---|---|---|
| 1/2″ (M12) | 13 | 2″ | 0.045 | ~1111 |
| 5/8″ (M16) | 11 | 2-1/2″ | 0.090 | ~556 |
| 3/4″ (M20) | 10 | 3″ | 0.160 | ~312 |
| 7/8″ (M22) | 9 | 3-1/2″ | 0.240 | ~208 |
| 1″ (M24) | 8 | 4″ | 0.380 | ~131 |
| 1-1/4″ (M30) | 7 | 5″ | 0.720 | ~69 |
| 1-1/2″ (M36) | 6 | 6″ | 1.250 | ~40 |
| 1-3/4″ (M42) | 5 | 7″ | 2.000 | ~25 |
| 2″ (M48) | 4.5 | 8″ | 3.100 | ~16 |
| 2-1/2″ (M64) | 4 | 10″ | 6.000 | ~8 |
| 3″ (M72) | 4 | 12″ | 10.500 | ~4.7 |
Use our online Metal Weight Calculator on jadealloys.com for exact weight calculations based on your specific bolt dimensions and quantities.
ASTM A193 Grade B16 Equivalent Grades – International Cross Reference
The following international standards are considered equivalent or comparable to ASTM A193 Grade B16 for engineering and procurement purposes. Cross-referencing is common in export orders for the Middle East, Europe, and Asia:
| Standard / Country | Equivalent Grade / Designation |
|---|---|
| ASTM (USA) | ASTM A193 Grade B16 |
| ASME (USA) | ASME SA193 Grade B16 |
| UNS (USA) | K14072 |
| AISI (USA) | AISI B16 |
| DIN (Germany) | DIN 17240 Grade 40CrMoV47 |
| EN / SEN (Europe) | SEN 10269 Grade 40CrMoV4-6 |
| JIS (Japan) – Multiple | JIS G4107 Grade SNB16; JIS G4108 Grade SNB21-1/2/3/4/5 |
| BS (United Kingdom) | BS Grade 1506-6 |
| ISO (International) | ISO TR Grade 4956 |
| NORM (Austria) | NORM M3120 Grade 40CrMoV47 |
| ASTM (Related) | ASTM A437 Grade B4D |
Compatible Nuts & Washers for ASTM A193 B16 Bolts
ASTM A194 Grade 4 Nuts – Primary Recommendation
ASTM A194 Grade 4 Heavy Hex Nuts are the standard pairing for A193 Grade B16 Bolts in high-temperature service. Grade 4 nuts are made from medium-carbon alloy steel (similar chemistry to B16) and are quenched and tempered to match the strength class of B16 fasteners.
| Parameter | ASTM A194 Grade 4 Nut (Recommended) | ASTM A194 Grade 2H (Alternative for B7) | ASTM A194 Grade 16 (Alt. for B16) |
|---|---|---|---|
| Material | Medium carbon alloy steel, Q&T | Medium carbon steel, Q&T | Cr-Mo-V alloy steel |
| Proof Load (psi) | 175,000 (≤1″) / 150,000 (>1″) | 175,000 (≤1-1/2″) | Equivalent to Grade 4 |
| Hardness Min | C24 (248 HBW) | C24 (235 HBW) | C24 |
| Hardness Max | C36 (353 HBW) | C36 (353 HBW) | C36 |
| High-Temp Suitability | Yes – up to 540°C | Limited – below 427°C | Yes – up to 540°C |
| Standard Size Range | 1/4″ to 4″ and M6-M100 | 1/4″ to 4″ and M6-M100 | Per order |
| Jade Alloys Stock | Yes – ready stock Mumbai | Yes – ready stock Mumbai | On request |
Recommended Washer: ASTM F436 (hardened washers) for use with A193 B16 bolts in structural and pressure connections. Ensure washer material compatibility with flange face and gasket requirements.
Manufacturing Process – ASTM A193 B16 Bolts at Jade Alloys
Our ASTM A193 B16 Bolt manufacturing follows a rigorous, multi-stage process to ensure dimensional accuracy, mechanical conformity, and full traceability from raw material to finished product:
- Raw Material Procurement: Prime Cr-Mo-V alloy steel sourced from certified mills in South Korea, Japan, South America, and Eastern Europe, with MTRs (Mill Test Reports) verifying chemical composition per ASTM A193.
- Hot Forging / Cold Forging: Fasteners up to M24 are cold-forged; M24 to M100 are hot-forged. Both processes are performed on CNC-controlled presses to achieve tight dimensional tolerances.
- Heat Treatment – Quenching & Tempering: All B16 fasteners are quenched and tempered at a minimum of 860°C to achieve the required hardness range (35 HRC max). Heat treatment is performed in controlled-atmosphere furnaces with digital temperature logging.
- Thread Rolling / Thread Cutting: Threads are rolled (preferred for fatigue resistance) or cut per ASME B1.1 for inch series and ASME B1.13M for metric. Thread class 2A (external) is standard; 3A available on request.
- Surface Treatment: Standard bare/black finish; hot-dip galvanized (HDG), zinc-plated, PTFE-coated, and anti-corrosion coatings available per customer specification or project requirements.
- Dimensional Inspection: 100% dimensional inspection per ASME B18.2.1 / B18.3 using calibrated gauges, CMM (Coordinate Measuring Machine), and thread gauges (GO/NO-GO).
- Mechanical Testing: Tensile, yield, elongation, reduction of area tested on UTM (Universal Testing Machine); Brinell and Rockwell hardness tested per ASTM E18/E10.
- Chemical Analysis: Optical Emission Spectrometry (OES) for chemical composition verification; PMI (Positive Material Identification) available on request.
- Non-Destructive Testing (NDT): Ultrasonic testing (UT), Magnetic Particle Inspection (MPI), and Dye Penetrant Inspection (DPI) available per project specification.
- Marking & Identification: Grade marking ‘B16’ and manufacturer identification stamped on bolt head per ASTM A193 marking requirements.
- Packing & Dispatch: Packed in wooden boxes or polybags per ISPM 15 (heat-treated wood packaging) for international export; domestic supply in standard cartons.
Quality Assurance & Certifications
Jade Alloys maintains a comprehensive quality management system to ensure every batch of ASTM A193 B16 Bolts meets or exceeds international standards:
| Certification / Compliance | Details |
|---|---|
| ISO 9001:2015 | Quality Management System – Manufacturing & Supply |
| ASTM A193 / ASME SA193 Dual Certification | All B16 fasteners dual-certified for pressure equipment use |
| PED 97/23/EC | Pressure Equipment Directive – Europe CE-mark compliance |
| Merkblatt AD 2000 W2 | German pressure vessel regulation compliance |
| NACE MR0103 / MR0175 | Sour service (H2S environment) material requirements – Oil & Gas |
| ISO 15156 | Materials for use in H2S-containing environments (equivalent to NACE MR0175) |
| Free from Mercury & Radioactive Contamination | Mandatory declaration with every shipment |
| Material Test Reports (MTR) | Full chemical & mechanical MTRs provided with each order |
| Third-Party Inspection (TPI) | Lloyds, Bureau Veritas, SGS, MOODY, TÜVNORD, DNV available on request |
| PMI Testing | Positive Material Identification available for all batches |
| Hydrostatic Testing | Available for pressure-critical applications on request |
Applications of ASTM A193 B16 Bolts
ASTM A193 Grade B16 Alloy Steel Bolts are the fastener of choice in the most demanding industrial environments. Key application sectors include:
- Oil & Gas
- Power Generation
- Petrochemical & Refining
- Chemical Processing
- Nuclear Power
- Pulp & Paper
- Pharmaceutical & Food
- Valves, Pumps & Flanges
- Heavy Engineering & Construction
- Aerospace & Defense
ASTM A193 B16 Bolts – Available Stock at Jade Alloys
We maintain ready stock of the most commonly ordered ASTM A193 B16 fastener types in Mumbai, India, enabling fast dispatch for urgent project requirements. Our inventory includes:
| Stud Bolts & Rods | Hex & Heavy Hex Bolts | Special Types |
|---|---|---|
| A193 B16 Stud Bolts (Full Thread) | A193 B16 Hex Bolts | A193 B16 Eye Bolts |
| A193 B16 Stud Bolts (Double End) | A193 B16 Heavy Hex Bolts | A193 B16 U-Bolts |
| A193 B16 Stud Bolts (Tap End) | A193 B16 Hex Cap Screws | A193 B16 J-Bolts |
| A193 B16 Threaded Rods (Full Length) | A193 B16 Socket Head Cap Screws | A193 B16 Anchor Bolts |
| SA193 B16 Round Bars (for machining) | A193 B16 Flange Head Bolts | A193 B16 Set Screws |
| ASTM A194 Grade 4 Heavy Hex Nuts | ASTM F436 Washers | Custom Special Fasteners (on request) |
Packaging & Export Information
Packaging Standards
- Domestic Supply: Polybag-lined carton boxes with identification labels (grade, size, heat number, quantity, net weight, gross weight).
- Export Supply: ISPM 15-compliant heat-treated wooden boxes or plywood crates with moisture barrier inner lining, suitable for air, sea, and road freight.
- Bulk Orders: Pallet-packed and shrink-wrapped per customer’s container loading plan.
- Special Packaging: Stainless steel wire-bound crates or custom packaging available for government/defense contracts.
Export Documentation Provided
- Commercial Invoice & Packing List
- Material Test Reports (MTRs) – Chemical & Mechanical
- EN 10204 Type 3.1 / 3.2 Inspection Certificates
- Certificate of Origin (COO) – India
- MSDS (Material Safety Data Sheet)
- Third-Party Inspection Reports (if applicable)
- NACE Compliance Certificate (for sour service orders)
- Customs HS Code Documentation for fastener exports
Frequently Asked Questions (FAQ) – ASTM A193 B16 Bolts
What is ASTM A193 Grade B16?
ASTM A193 Grade B16 is a chromium-molybdenum-vanadium alloy steel specification used for high-strength bolting in high-temperature and high-pressure applications.
What is the difference between ASTM A193 B16 and B7?
B16 contains vanadium in addition to chromium and molybdenum, giving it better creep resistance and strength retention at elevated temperatures compared to B7.
What is the maximum service temperature for A193 B16 Bolts?
ASTM A193 Grade B16 bolts are suitable for continuous service temperatures up to 1000°F (540°C).
What nuts are compatible with ASTM A193 B16 Bolts?
ASTM A194 Grade 4 and Grade 16 heavy hex nuts are commonly used with ASTM A193 B16 bolts.
What is the hardness of ASTM A193 B16 Bolts?
The maximum allowable hardness is 321 HBW or 35 HRC.
What are the yield and tensile strength values for A193 B16?
For diameters up to 2.5 inches, the minimum tensile strength is 125 ksi (860 MPa) and yield strength is 105 ksi (725 MPa).
What is the chemical composition of ASTM A193 B16?
The alloy contains chromium, molybdenum, vanadium, carbon, manganese, silicon, and controlled trace elements.
Is ASTM A193 B16 compliant with NACE MR0175?
Yes, ASTM A193 B16 can be supplied in compliance with NACE MR0175 / ISO 15156 for sour service applications.
What surface finishes are available for A193 B16 Bolts?
Available finishes include plain black, hot-dip galvanized, zinc plated, PTFE coated, phosphate and oil, and yellow passivated.
How do I get a quote for ASTM A193 B16 Bolts?
Contact Jade Alloys at sales@jadealloys.com or call +91 9987685906 with your specifications and quantity requirements.
What is the thread specification for ASTM A193 B16 Bolts?
Threads follow ASME B1.1 inch standards such as UNC, UNF, and 8UN, or ASME B1.13M metric standards.
Request a Quote – ASTM A193 B16 Bolts from Jade Alloys
Whether you need a small sample order for engineering evaluation or bulk project supply for an oil refinery, power plant, or petrochemical facility, Jade Alloys has the manufacturing capability, certified inventory, and global logistics expertise to meet your requirements.
We are a trusted ASTM A193 B16 Bolts manufacturer in Mumbai, India, supplying export-quality fasteners to customers in the USA, UAE, Saudi Arabia, Qatar, Germany, the UK, Singapore, and more than 50 countries worldwide.
Our products are backed by international quality standards, third-party inspection acceptance, and complete material traceability from raw material to finished fastener.
Jade Alloys – Your Trusted ASTM A193 B16 Bolts Manufacturer in India Since 2000+
