
AISI 321H 1.4878 Steel Plate
1.Standard: ASTM A240、ASME SA240
2.Thickness: 0.1mm - 50mm
3.Width: 100 - 2000mm
4.Length: 1000 - 12000mm Customer's Requirement
AISI 321H 1.4878 steel plate is a stabilized austenitic stainless steel high temperature corrosion resistant material. As an austenitic stainless steel containing titanium, ASTM A240 S32109 stainless steel plate can effectively resist intergranular corrosion at high temperatures. DIN 1.4878 material exhibits excellent oxidation resistance at temperatures up to 900°C. Compared with 321, Alloy 321H has better strength and creep properties at high temperatures due to its higher carbon content.
ASTM A240 Type 321H Plate Application areas:
- Chemical industry
- Reactors, heat exchangers
- Oil and gas industry
- Power plants
- Boilers and Heat Exchanger Components
- Aerospace

Alloy 321H Stainless Steel Sheets Specification
| Specifications | ASTM A240 / ASME SA240 EN 1.4878 Hot and Cold Rolled Sheet |
| Type | ASTM A 240 TP 321H SS Sheets |
| Thickness |
|
| Size | 1000 mm x 2000mm, 1220mm x 2440mm, 1250mm x 2500mm, 1500mm x 3000mm, 2000mm x 4000mm, Etc. |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Specialized in | Shim Sheet, Perforated Sheet, B. Q. Profile. |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats |
ASTM A240 Gr 321 / 321H SS Sheet Chemical Composition
| Grade | SS 321 | SS 321H |
| C | 0.08 max | 0.04 - 0.10 |
| Mn | 2.0 max | 2.0 max |
| Si | 1.0 max | 1.0 max |
| P | 0.045 max | 0.045 max |
| S | 0.030 max | 0.030 max |
| Cr | 17.00 - 19.00 | 17.00 - 19.00 |
| N | 0.10 max | 0.10 max |
| Ni | 9.00 - 12.00 | 9.00 - 12.00 |
| Ti | 5(C+N) - 0.70 max | 4(C+N) - 0.70 max |
DIN 1.4878 Stainless Steel Mechanical Properties
| Density | 8.0 g/cm3 |
| Melting Point | 1457 °C (2650 °F) |
| Tensile Strength | Psi - 75000 , MPa - 515 |
| Yield Strength (0.2%Offset) | Psi - 30000 , MPa - 205 |
| Elongation | 35% |
Why Choose Us Suppliers Manufacturers?
- Hardness Test
- Flattening Test
- Pitting Resistance Test
- Chemical Analysis - Spectro Analysis
- Micro and Macro Test
- Flaring Test
- Intergranular Corrosion (IGC) Test
- Mechanical Testing Such as Tensile of Area
- Positive Material Identification – PMI Testing
FAQ
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