Zirconium round bars ASTM B550/B550M Grade R60702 are solid cylindrical metal products that are made from high-purity zirconium, widely used in industries that require excellent corrosion resistance, like chemical processing, nuclear and marine sectors. These bars are made with equivalent international standards ASRM B668 Grade 702, which contain around 99.2% zirconium along with different elements such as hafnium, iron, chromium, and oxygen, which help to improve the stability and durability. The mechanical properties of zirconium round bars come with tensile strength (around 379MPa) and yield strength of about 270MPa with high ductility, making them reliable in harsh environments. With over 10+ years of export experience in all over the world Jade alloys is the most trustworthy supplier of zirconium round bars, providing ASTM-certified products with consistent quality for different industrial applications.
Quick Section Links
- Zirconium Round Bar Grades
- Zirconium Round Bar Specifications
- Types of Zirconium Round Bars and Profiles
- Mechanical Properties of Zirconium Copper Rod
- Physical & Thermal Properties of Zirconium Copper Rod
- Dimensional Size Chart
- Zirconium Alloy 702 Size & Weight Chart
- Dimensional Tolerances (UNS R60702)
- Applications and Industrial Uses
- Frequently Asked Questions
Zirconium Round Bar Grades
Zirconium Round Bar Specifications (UNS R60702 / R60705)
| Property | Detail |
|---|---|
| Item Name | Zirconium Rod |
| Material | R60702, R60705 |
| Size | 5.0mm diameter x L |
| Specification | ASTM B550/B550M-07 |
| Surface | Turning, Grinding |
| Diameter | 5mm to 250mm (custom sizes on request) |
| Length | Up to 6,000mm (cut-to-length available) |
| Finish | Hot Rolled, Cold Drawn, Turned, Ground, Polished |
| Density | 6.49 g/cm³ |
| Hardness | ≤200 HB (Grade R60702) |
Types of Zirconium Round Bars and Profiles
Zirconium copper rods come in different types that are suitable for different applications and requirements. Below are the different types of Zirconium Copper Rods that are given characteristics.
- Zirconium Copper Round Bar:
These are standard round rods made up of zirconium copper alloy. It’s commonly used in different ranges of applications that are used in the electrical and thermal conductivity industries. - Zirconium Copper Square Bar:
The zirconium copper square rods are mostly used in that application, where strength, precise dimensions, and characteristics are required. This rod is commonly used to make different components of electrical connectors and electrode materials. - Zirconium Copper Flat Bar:
Zirconium flat bars are mostly used in flat surface structures. They are mostly used with electrode material in welding applications. - Zirconium Copper Hexagonal Bar:
The hexagonal rod is more stable compared to the round bars, and they are mostly used in applications that require electrical conductivity and thermal performance. - Zirconium Copper Hollow Bar:
The zirconium copper hollow rod is used in an application where the weight reduction, heat dissipation, and structure characteristic is important, like in aerospace and automotive industries. - Zirconium Copper Threaded Rod:
Threaded rods are used to connect the different applications with both ends and are commonly used in electrical, mechanical, and construction applications.
The choice of Zirconium Copper Rod type depends on the specific needs of the application, including factors like strength, electrical and thermal conductivity, surface finish, and dimensional accuracy. Each type offers unique advantages and is suited to different scenarios.
Mechanical Properties of Zirconium Copper Rod as per ASTM B301 / DIN 2.1563
| Property | Value |
|---|---|
| Tensile Strength | 380 – 520 MPa |
| Yield Strength (0.2% Offset) | 300 – 450 MPa |
| Elongation (% in 50mm) | 10 – 20% |
| Hardness (Vickers HV) | 100 – 140 HV |
| Hardness (Rockwell B) | 55 – 80 HRB |
| Elastic Modulus | 128 GPa |
| Fatigue Strength | ~180 MPa |
| Reduction in Area | ≥ 40% |
EN CW120C / JIS H3260 Physical & Thermal Properties of Zirconium Copper Rod
| Property | Value |
|---|---|
| Density | 8.90 g/cm³ |
| Melting Point | 1080 – 1085 °C |
| Electrical Conductivity | 92 – 95% IACS |
| Thermal Conductivity | 360 – 380 W/m·K |
| Coefficient of Thermal Expansion | 17.6 µm/m·°C |
| Specific Heat Capacity | 385 J/kg·K |
| Electrical Resistivity | 18 – 20 nΩ·m |
| Softening Temperature | ~550 °C |
| Magnetic Permeability | Non-magnetic |
| Modulus of Elasticity | 128 GPa |
ASTM / ISO 1035 Dimensional Size Chart of Zirconium Copper Rod
| Diameter (mm/inch) | Length | Tolerance | Weight per Meter |
|---|---|---|---|
| 3 mm (1/8″) | 1000 – 6000 mm | ±0.05 mm | 0.063 kg/m |
| 6 mm (1/4″) | 1000 – 6000 mm | ±0.05 mm | 0.252 kg/m |
| 10 mm (3/8″) | 1000 – 6000 mm | ±0.10 mm | 0.700 kg/m |
| 12 mm (1/2″) | 1000 – 6000 mm | ±0.10 mm | 1.008 kg/m |
| 16 mm (5/8″) | 1000 – 6000 mm | ±0.15 mm | 1.793 kg/m |
| 20 mm (3/4″) | 1000 – 6000 mm | ±0.15 mm | 2.800 kg/m |
| 25 mm (1″) | 1000 – 6000 mm | ±0.20 mm | 4.375 kg/m |
| 30 mm (1-1/4″) | 1000 – 6000 mm | ±0.20 mm | 6.300 kg/m |
| 40 mm (1-1/2″) | 1000 – 6000 mm | ±0.25 mm | 11.200 kg/m |
| 50 mm (2″) | 1000 – 6000 mm | ±0.30 mm | 17.500 kg/m |
| 60 mm (2-1/2″) | 1000 – 6000 mm | ±0.30 mm | 25.200 kg/m |
| 80 mm (3″) | 1000 – 6000 mm | ±0.40 mm | 44.800 kg/m |
| 100 mm (4″) | 1000 – 6000 mm | ±0.50 mm | 70.000 kg/m |
Zirconium Alloy 702 Round Bar Size & Weight Chart
Weights calculated at 6.49 g/cm³ density (ASTM B550 Grade R60702). Contact us for Grade R60705 or custom cut-to-length pricing.
|
Round Bar |
||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Kgs / Foot | Kgs / Mtr | Size | Kgs / Foot | Kgs / Mtr | Size | Kgs / Foot | Kgs / Mtr |
| 3 | 0.017 | 0.055 | 20 | 0.753 | 2.470 | 3″ | 10.900 | 35.762 |
| 1/8″ | 0.019 | 0.062 | 22 | 0.908 | 2.979 | 3-1/4″ | 12.800 | 41.996 |
| 5/32″ | 0.029 | 0.095 | 7/8″ | 0.926 | 3.038 | 3-1/2″ | 14.850 | 48.772 |
| 4 | 0.030 | 0.098 | 24 | 1.080 | 3.543 | 3-3/4″ | 17.001 | 55.780 |
| 3/16″ | 0.043 | 0.141 | 25 | 1.180 | 3.871 | 4″ | 19.306 | 63.340 |
| 5 | 0.047 | 0.154 | 1″ | 1.210 | 3.970 | 4-1/4″ | 21.908 | 72.249 |
| 7/32″ | 0.058 | 0.190 | 26 | 1.271 | 4.170 | 4-1/2″ | 24.4487 | 80.340 |
| 6 | 0.068 | 0.223 | 27 | 1.368 | 4.490 | 4-3/4″ | 27.366 | 90.249 |
| 1/4″ | 0.076 | 0.249 | 1-1/8″ | 1.534 | 5.033 | 5″ | 30.461 | 99.940 |
| 7 | 0.091 | 0.298 | 30 | 1.691 | 5.548 | 5-1/2″ | 36.690 | 121.000 |
| 5/16″ | 0.118 | 0.387 | 1-1/4″ | 1.924 | 6.349 | 6″ | 43.860 | 143.900 |
| 8 | 0.120 | 0.398 | 32 | 1.894 | 6.314 | 6-1/2″ | 51.093 | 167.630 |
| 9 | 0.152 | 0.498 | 1-3/8″ | 2.303 | 7.550 | 7″ | 59.432 | 196.000 |
| 3/8″ | 0.170 | 0.557 | 35 | 2.390 | 7.553 | 7-1/2″ | 68.226 | 225.000 |
| 10 | 0.189 | 0.620 | 36 | 2.438 | 7.999 | 8″ | 77.586 | 254.55 |
| 11 | 0.228 | 0.748 | 38 | 2.792 | 8.903 | 10″ | 121.048 | 397.140 |
| 7/16″ | 0.232 | 0.761 | 1-1/2″ | 2.715 | 8.951 | |||
| 12 | 0.271 | 0.889 | 40 | 3.009 | 9.872 | |||
| 1/2″ | 0.303 | 0.994 | 1-5/8″ | 3.200 | 10.449 | |||
| 13 | 0.318 | 1.043 | 1-3/4″ | 3.712 | 12.179 | |||
| 14 | 0.368 | 1.207 | 45 | 3.807 | 12.555 | |||
| 9/16″ | 0.383 | 1.256 | 1-7/8″ | 4.260 | 13.977 | |||
| 15 | 0.424 | 1.391 | 48 | 4.330 | 14.205 | |||
| 5/8″ | 0.473 | 1.551 | 50 | 4.698 | 15.414 | |||
| 16 | 0.481 | 1.578 | 2″ | 4.848 | 15.906 | |||
| 17 | 0.543 | 1.791 | 2-1/8″ | 5.475 | 17.963 | |||
| 11/16″ | 0.573 | 1.880 | 2-1/4″ | 6.135 | 20.128 | |||
| 18 | 0.610 | 2.001 | 60 | 6.768 | 22.205 | |||
| 3/4″ | 0.682 | 2.237 | 2-3/8″ | 6.838 | 22.435 | |||
| 2-1/2″ | 7.576 | 24.856 | ||||||
| 2-5/8″ | 8.354 | 27.409 | ||||||
| 2-3/4″ | 9.169 | 30.083 | ||||||
Zirconium Round Bar Dimensional Tolerances (UNS R60702)
The tolerance chart below applies to UNS R60702 zirconium bar stock per ASTM B550/B550M. All values are in millimetres and represent maximum permissible deviation from nominal dimension.
|
Tolerances for UNS R60702 Round Bar |
||
|---|---|---|
| Shape / Section | Size, diameter or width across flats | Permitted variation |
| milimeter | milimeter | |
| Round |
≥6 ≦ 18 > 18 ≦ 30 > 30 ≦ 50 > 50 ≦ 80 > 80 ≦ 100 |
+ 0 to – 0.070 + 0 to – 0.085 + 0 to – 0.100 + 0 to – 0.120 + 0 to – 0.140 |
| Flat (thickness) |
< 18 > 18 ≦ 30 > 30 ≦ 50 > 50 ≦ 80 |
+ 0 to – 0.110 + 0 to – 0.130 + 0 to – 0.250 + 0 to – 0.350 |
| Flat (width) |
< 18 > 18 ≦ 30 > 30 ≦ 50 > 50 ≦ 80 > 80 ≦ 100 > 100 ≦ 130 > 130 ≦ 160 > 160 ≦ 320 |
+ 0 to – 0.110 + 0 to – 0.130 + 0 to – 0.160 + 0 to – 0.190 + 0 to – 0.220 + 0 to – 0.350 + 0 to – 1.00 + 1.00 to – 1.00 |
| Square and hexagon |
≥ 6 ≦ 18 > 18 ≦ 30 > 30 ≦ 50 > 50 ≦ 80 > 80 ≦ 105 |
+ 0 to – 0.090 + 0 to – 0.110 + 0 to – 0.130 + 0 to – 0.160 + 0 to – 0.250 |
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Applications and Industrial Uses of Zirconium Round Bars
- Textile machinery
- Oil and gas industry
- Medical Gas Pipeline Systems
- Pharmaceutical processing industry
- Fluiden piping
- Modern architecture
- Water waste projects
Frequently Asked Questions
Zirconium round bars are solid cylindrical metal rods made from zirconium, used in industries like chemical processing, marine, and nuclear due to their high corrosion resistance.
Zirconium is a metal, while zirconia (zirconium dioxide) is a ceramic material. Zirconium is used in industrial applications, whereas zirconia is used in ceramics, dental products, and coatings.
Zirconium forms a strong protective oxide layer on its surface, which prevents chemicals, acids, and moisture from attacking the metal.
Zirconium 702 (UNS R60702) is commercially pure zirconium (min. 99.2% Zr+Hf) offering the highest corrosion resistance across a wide range of acids and oxidising environments. Zirconium 705 (UNS R60705) is alloyed with 2–3% niobium, delivering approximately 30% higher tensile and yield strength suited to high-pressure or structurally loaded applications where some trade-off in corrosion resistance is acceptable. Specify Grade 702 for chemical process equipment; specify Grade 705 for pressure vessels and nuclear hardware requiring higher mechanical performance.
Jade Alloy supplies ASTM-certified zirconium round bars with Mill Test Reports (EN 10204 3.1), third-party inspection by SGS/Bureau Veritas on request, and full RoHS compliance documentation.
