ASTM A276 Type 321 Stainless Steel Round Bars
Grade：300 Series,
Shape：Round,
Surface Treatment：Pickling,
Material Grade：201/301/303/304/317
Application：Stainless Steel/Building Material/Metal/Industrial,
Delivery Time：10-20 Days,
Transport Package：as Your Requirement,
Specification：10-600MM,
What isASTM A276 Type 321 Stainless Steel Round Bars ?
Type 321 stainless steel round bar is titanium stabilized austenitic stainless steel (UNS S32100) that complies with ASTM A276 standard. Carbon is fixed by adding titanium (Ti≥5×C%) to avoid intergranular corrosion during welding. It can resist intergranular corrosion without heat treatment after welding (tested by ASTM A262 E method); it can be used for a long time at 400-800℃, and its creep resistance is better than 304 stainless steel; it is suitable for high temperature scenes such as heat treatment equipment and boiler superheaters.
321 Stainless Steel bars
321 Stainless Steel Forged Bar Advantages
What is the processing performance of 321 stainless steel round bar? Is it suitable for cold forming?
Cutting: Moderate hardness (≤201 HB), carbide tools are recommended.
Cold forming ability: Good cold drawing and bending performance. After cold processing, residual stress can be eliminated by stress relief annealing (200-300℃) to avoid deformation.
Will 321 stainless steel hot-rolled bar rust at high temperature?
A dense Cr₂O₃ film is formed below 800℃, which is not easy to rust; above 800℃, the oxide film may peel off, and high temperature resistant steel such as 310S needs to be used instead.
Why Choose GNEE
GNEE provides ASTM A276 material certificate to confirm Cr≥24%, Ni≥19%, and rejects non-standard low-priced materials; additional oxidation resistance weight gain test (ASTM G54) can be added to verify the oxidation rate at 1150°C; grinding grade 321 cold-drawn bars are preferred for precision parts, and 321 hot-rolled pickled bars can be selected for ordinary structural parts to reduce costs.
ASTM A276 321 Cold Drawn Stainless Steel BarSpecification
SS 321 Forged bar Surface Finish
| ST | Smooth turned | SRE | Slit rolled edge |
| BD | Bright drawn | PR | Peeled & reeled |
| CF | Cold finished | HF | Hot finished |
| CG | Centreless ground | HRAP | Hot rolled annealed & pickled |
| P and T | Peeled and turned | P | Polished |
| CD | Cold drawn | RT | Rough turned & peeled |
SS 321 Rod Chemical Resistance Guide
| Elements | Carbon | Manganese | Silicon | Phosphorus | Sulfur | Chromium | Nitrogen | Nickel | Titanium |
| Stainless Steel 321 | 0.08 Maximum | 2.0 Maximum | 1.0 Maximum | 0.045 Maximum | 0.030 Maximum | 17.00 – 19.00 | 0.10 Maximum | 9.00 – 12.00 | 5(C+N) – 0.70 Maximum |
Mechanical Analysis of ASTM A276 type SS 321 Round Bar
| Density | Elongation | Tensile Strength | Yield Strength | Melting Point |
| 8.0 g/cm3 | 35 % | Psi=75000, MPa=515 | Psi=30000, MPa=205 | 1457 °C |
ASTM A276 Type 321 Rod Manufacturer in china
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