321/321H Stainless Steel Plate
Grade: 321/321H
Thickness: 3.0mm-200mm
Width: 1.5m/2.0m/2.2m or as client’s requirement.
Standard: ASTM A240/A240M, JIS G4304, JISG 4305, EN 10088/3
Finish: No.1, Polished
- Fast Shipping / Ready Stock
- ISO 9001 Direct Factory
- Custom Cutting & Processing
- 100% MTC & SGS Inspection Supported
Grade 321 stainless steel plate is a standard 18/8 chromium-nickel alloy reinforced by titanium and niobium. The addition of titanium stabilizes this alloy and removes its susceptibility to intergranular corrosion while mitigating carbide precipitation during welding. At elevated temperatures, it resists oxidation and has higher creep and rupture properties than 304/304L stainless steel.
Grade 321H stainless steel plate contains more carbon (between 0.04% to 0.1%) than regular 321 (≤0.08%), which enhances its high-temperature performance, including increasing its resistance to cracking or warping due to shifts in temperature.
| Chemical composition | 321 (UNS S32100/ EN1.4541) | 321H (UNS S32109/EN 1.4878) |
| Carbon, Max% | 0.08 | 0.04-0.1 |
| Manganese, Max% | 2 | 2 |
| Phosphorus, Max% | 0.045 | 0.045 |
| Sulphur, Max% | 0.03 | 0.03 |
| Silicon, Max% | 0.75 | 0.75 |
| Chromium Range% | 17.0-19.0 | 17.0-19.0 |
| Nickel Range% | 9.0-12.0 | 9.0-12.0 |
| Titanium Range% | 5*(C+N)min, 0.7 max | 4*(C+N)min, 0.7 max |
| Nitrogen, Max% | 0.1 | – |
| Mechanical Properties | 321 | 321H |
| Tensile Min | 75 ksi | 75 ksi |
| Yield Min | 30 ksi | 30 ksi |
| Elongation Min | 40% | 40% |
| Hardness Max | 95 HRB | 95 HRB |
Common uses of Stainless Steel Sheet 321 include:
- Aircraft Exhaust Manifolds
- Expansion Joints
- Furnace Parts
- Heat Exchangers
Grade 321 stainless steel plate is a standard 18/8 chromium-nickel alloy reinforced by titanium and niobium. The addition of titanium stabilizes this alloy and removes its susceptibility to intergranular corrosion while mitigating carbide precipitation during welding. At elevated temperatures, it resists oxidation and has higher creep and rupture properties than 304/304L stainless steel.
Grade 321H stainless steel plate contains more carbon (between 0.04% to 0.1%) than regular 321 (≤0.08%), which enhances its high-temperature performance, including increasing its resistance to cracking or warping due to shifts in temperature.
| Chemical composition | 321 (UNS S32100/ EN1.4541) | 321H (UNS S32109/EN 1.4878) |
| Carbon, Max% | 0.08 | 0.04-0.1 |
| Manganese, Max% | 2 | 2 |
| Phosphorus, Max% | 0.045 | 0.045 |
| Sulphur, Max% | 0.03 | 0.03 |
| Silicon, Max% | 0.75 | 0.75 |
| Chromium Range% | 17.0-19.0 | 17.0-19.0 |
| Nickel Range% | 9.0-12.0 | 9.0-12.0 |
| Titanium Range% | 5*(C+N)min, 0.7 max | 4*(C+N)min, 0.7 max |
| Nitrogen, Max% | 0.1 | – |
| Mechanical Properties | 321 | 321H |
| Tensile Min | 75 ksi | 75 ksi |
| Yield Min | 30 ksi | 30 ksi |
| Elongation Min | 40% | 40% |
| Hardness Max | 95 HRB | 95 HRB |
Common uses of Stainless Steel Sheet 321 include:
- Aircraft Exhaust Manifolds
- Expansion Joints
- Furnace Parts
- Heat Exchangers
