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Introduction
310S stainless steel bars are bar products made from high-chromium, high-nickel austenitic stainless steel as the base material, conforming to ASTM A276/A479 standards. This material is mainly used for bearing loads in high-temperature environments or as structural and heat-resistant components.
Specification
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Item |
Details |
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Grade |
310S (UNS S31008, ASTM A276 / A479) |
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Shape |
Round Bar |
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Diameter |
6mm – 500mm |
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Length |
1-6m(customized) |
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Tensile Strength |
≥515 MPa |
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Yield Strength |
≥205 MPa |
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Elongation |
≥40% |
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Hardness (Brinell HB) |
≤217 |
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Surface Finish |
Black, Bright, Polished, Ground, Pickled & Passivated |
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Production Method |
Hot Rolled, Cold Drawn, Forged, Machined |
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Element |
C (max) |
Cr |
Ni |
Mn |
Si |
P |
S |
Fe (balance) |
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Value |
0.08 |
24 – 26 |
19 – 22 |
≤2.0 |
≤1.5 |
≤0.045 |
≤0.030 |
Balance |
|
Features
Suitable for high-temperature applications
The Cr 24–26% and Ni 19–22% composition system forms an oxide film at high temperatures to slow down the oxidation process, making it suitable for furnace or heat-treated components.
Suitable for machining
With a hardness ≤217 HB, and supplied as bar stock, it can be machined by turning, milling, etc., for manufacturing shafts or heat-resistant parts.
Multiple processing options
It can be produced by hot rolling, cold drawing, forging, or machining, with diameters of 6–500 mm and lengths of 1–6 m available to suit different machining allowances and application requirements.
Applications
Heat treatment equipment industry: Used in furnace rollers, furnace supports, and heating zone structural components, providing support and positioning under high-temperature conditions.
Petrochemical and Energy Industry: Applied to high-temperature pipe connections and heat-resistant structural components, used in high-temperature gas or medium environments.
Industrial Furnace Manufacturing Industry: Used in furnace components and load-bearing parts, serving as structural materials under continuous heating conditions.
Machining Industry: Used in the manufacture of heat-resistant shafts, connectors, and supports, used in operating conditions involving temperature variations.
Power Equipment Industry: Used in boilers and high-temperature auxiliary structural components, providing structural and connection functions in thermal environments.

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