Stainless Steel Pipe Supplier Wenzhou Kaixin China
Stainless steel round bar is a solid cylindrical rod made of stainless steel. It is used in a variety of applications such as construction, manufacturing, and various industries depending on the alloy and grade of the stainless steel used. The round bar can be supplied in different diameters, lengths, and finishes such as hot-rolled, cold-rolled, polished, and centerless ground. Stainless steel round bars are popular due to their exceptional corrosion resistance, durability, and aesthetic appeal. It is commonly used for making shafts, fasteners, screw machine parts, valves, and pumps. It is also seen in the food and beverage industry as well as in marine applications due to its resistance to harsh environmental conditions.
Stainless Steel Round Bar Specifications
| Stainless Steel Bar Length | 2 to 6 meters or 8 to 20 feet |
| SS Rod Chamfering | Available in 30, 45 & 60 degree thru fully automatic both-end chamfering machine |
| Ultrasonic Test of ASTM A276 Threaded Rod | As per ASTM A-388, EN 10308 (class 1 to 4), API 6A/ISO it is 100% tested thru Digital Ultrasonic Flaw Detector,
10423:2003-PSL 3, MIL STD 2154, SEP 1920:1984 |
| SS Round Bar Size Tolerances | h11 |
| Tolerance of Cold Rolled SS Round Bar Length | Stock in special cut to length bar in tolerance – 0/+10mm (-0 +0.5 inch) |
| Surface Finish of Cold Rolled SS Bar | Cold drawn or Belt polished condition |
| Bar Heat Treatment | Annealed and Solution Annealed |
Applications of Stainless Steel Round Bar
Stainless Steel Round Bar is used in a variety of industries, including defense, shipbuilding, aerospace, clothing, fabrication, cement, heavy earthmoving machinery, paper and pulp, and manufacturing.
- SS Round Bar used in Heavy engineering Industries for making heavy machines and tools for manufacturing various products.
- Railway engines and coaches are made with the usage of steel round bars
- The Agricultural sector uses the round bars to make the machinery and equipment required for agriculture.
- Stainless Steel Round Bars used in the Chemicals Industry
- Round bars are also used in the food processing industry for manufacturing machines.
- Stainless Steel Round Bars used in Plumbing
- The Oil and petroleum industry requires ss round bar
Size of stainless steel round bar
| PRODUCTS | DIAMETER (MM) | LENGTH (MM) | DIAMETER TOLERANCE | STRAIGHTNESS (MM/M) |
| HOT ROLLED ROUND BAR | 19-80.0 | 2500-6500 | +-0.20~+-0.80 | 3.00 |
| HOT ROLLED HEXAGON BAR | 20.0-62.0 | 2500-6500 | +-0.20~+-1.00 | 3.00 |
| PEELED ROUND BAR | 16.00-65.00 | 3000-6500 | h10 | 0.50 |
| COLD DRAWN ROUND BAR | 2.0-63.50 | 2500-6500 | h9 | 0.50 |
| COLD DRAWN SQUARE BAR | 2” | 2500-6500 | h11 | 1.00 |
| COLD DRAWN HEXAGON BAR | 2 1/2” | 2500-6500 | h11 | 1.00 |
| CENTRELESS GRINDING ROUND BAR | 3” | 2500-6500 | h8 | 0.30 |
| COLD DRAWN SILILAR HEXAGON BAR | 3 1/2” | 2500-6500 | h12 | 1.00 |
Round Bar Chemical Composition
| ASTM Grade | C | Mn | Si | S | P | Cr | Ni | Mo | Other |
| 304 | 0.08 max | 2.00 max | 0.75 max | 0.030 max | 0.045 max | 18.0-20.0 | 8.0 11.0 | – | – |
| 317L | 0.035 max | 2.00 max | 0.75 max | 0.030 max | 0.045 max | 18.0-20.0 | 11.0 14.0 | 3.0 4.0 | – |
| 310 S | 0.08 max | 2.00 max | 1.5 max | 0.030 max | 0.045 max | 24.0-26.0 | 19.0 22.0 | 3.0 4.0 | – |
| 316 | 0.08 max | 2.00 max | 0.75 max | 0.030 max | 0.045 max | 16.0-18.0 | 10.0 14.0 | 2.0 3.0 | – |
| 321 | 0.08 | 2.00 max | 0.75 max | 0.030 max | 0.045 max | 17.0-20.0 | 9.0 12.0 | – | 5C 0.70% |
| 347 H | 0.04 0.10 | 2.00 max | 0.75 max | 0.030 max | 0.045 max | 17.0- 19.0 | 9.0 13.0 | – | 10C(Cb+Ta)<1. |
Mechanical Properties of Forged Stainless Steel Round Bar
| Grade | Elongation | Density | Tensile Strength | Yield Strength (0.2%Offset) | Melting Point |
| SS 202 | 40 % | 8.0 g/cm3 | 515 MPa | 275 MPa | 1454 °C (2650 °F) |
| SS 303 | 50 % | 55% | Psi – 85,000 | Psi – 45,000 | Rb 180 |
| SS 304 | 40% | 8.0 g/cm3 | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 1400 °C (2550 °F) |
| SS 304L | 40% | 8.0 g/cm3 | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 1400 °C (2550 °F) |
| SS 316 | 35 % | 8.0 g/cm3 | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 1454 °C (2650 °F) |
| SS 316L | 40 % | 8.0 g/cm3 | 485 Min | 170 Min. | 1400 °C (2550 °F) |
Stainless Steel Round Bar Tolerances
| COLD FINISHED ROUNDS | |
| ±.0015 | 5/16 to Under 1/2 |
| ±.001 | Under 5/16 |
| ±.0025 | 1 to Under 1-1/2 |
| ±.002 | 1/2 to Under 1 |
| ±.005 | Over 4 to 4-1/2 Incl. |
| ±.003 | 1-1/2 to 4 Incl. |
| ±.008 | Over 4-1/2 to 6 Incl. |
| HOT ROLLED & ROUGH TURNED | ||
| +1/32 –0 | Over 2 to 2-1/2 | Out of Rd. |
| 0.23 | ||
| +1/16 –0 | Over 3-1/2 to 4-1/2 | .046 |
| +3/64 –0 | Over 2-1/2 to 3-1/2 | .035 |
| +1/4 –0 | Over 15 to 20 | .125 |
| +1/8 –0 | Over5-1/2 to 6-1/2 | .070 |
| +5/64 –0 | Over 4-1/2 to 5-1/2 | .058 |
| +3/16 –0 | Over 8 to 12 | .093 |
| +5/32 –0 | Over 6-1/2 to 8 | .085 |
| +7/32 –0 | Over 12 to 15 | .109 |
| COLD FINISHED SQUARE AND HEX BAR | |
| ±.000–.003 | 5/16 to Under 1/2 |
| ±.000–.002 | Under 5/16 |
| ±.000–.011 | Over 3 |
| ±.000–.006 | Over 1 to 2 Incl. |
| ±.000–.004 | 1/2 to 1 Incl. |
| ±.000–.008 | Over 2 to 3 Incl. |
| PUMP SHAFT | ||||
| Tolerance Under | Diameter Over | |||
| 1 to Under 1-1/2 | –.0025 | +.000 | ||
| 3/4 to Under 1 | –.002 | +.000 | ||
| Over 4 to 4-1/2 | –.005 | +.000 | ||
| 1-1/2 to 4 Incl. | –.003 | +.000 | ||
| Over 4-1/2 to 5 Incl. | –.008 | +.000 | ||
| TOLERANCE STRAIGHTNESS | ||||
| Cold Finished | Hot Finished | |||
| But May Not Exceed | But May Not Exceed | |||
| 1/16 Inch in Any Ft., | 1/8 Inch in Any 5 Ft., | |||
| 1/16 x No. of Feet in Length | 1/8 x No. of Feet in Length | |||
| 5 | 5 | |||
SS Round Bar Weight Per Foot
| Diameter | Weight | Diameter | Weight |
| (inches) | per metre (kg) | (mm) | per metre (kg) |
| 1/8 Inch | 0.06 | 3 mm | 0.06 |
| 3/16 Inch | 0.14 | 4 mm | 0.10 |
| 1/4 Inch | 0.25 | 5 mm | 0.16 |
| 5/16 Inch | 0.39 | 6 mm | 0.22 |
| 3/8 Inch | 0.56 | 7 mm | 0.30 |
| 7/16 Inch | 0.77 | 8 mm | 0.40 |
| 1/2 Inch | 1.00 | 10 mm | 0.62 |
| 9/16 Inch | 1.22 | 12 mm | 0.89 |
| 5/8 Inch | 1.56 | 14 mm | 1.22 |
| 11/16 Inch | 1.89 | 15 mm | 1.40 |
| 3/4 Inch | 2.25 | 16 mm | 1.59 |
| 7/8 Inch | 3.07 | 18 mm | 2.01 |
| 1 Inch | 4.03 | 20 mm | 2.48 |
| 22 mm | 3.00 | ||
| 24 mm | 3.57 | ||
| 25 mm | 3.88 |