ASTM A240 Stainless Steel 321 Plate
1. Standard: ASTM A240、ASME SA240
2. Thickness: 4.8mm - 101.6mm
3. Width: 1219 to 2438mm or customized
4. Length: 1000mm-6096mm or customized
ASTM A240 stainless steel 321 plate is a stabilized version of 304 stainless steel. It also contains titanium as a stabilizing element, i.e., a 18/8 nickel-chromium mixture tempered with titanium, to prevent intergranular corrosion that may occur after heat treatment. S32100 can be used at temperatures between 800 and 1500°F, such as furnaces, burner components, and heat exchangers. SS 321 grade stainless steel plates are welded using conventional welding methods, such as TIG welding, MIG welding, etc.
Stainless Steel 321 Plate Sheet Standard：
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ASTM A240: Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
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Other Products: 321 Stainless Steel Fittings, Flanges, Forgings, Fasteners, Pipes, Tubes, Plates, Sheets, Strips, Coils, Bars, Round Rods, Etc.
SS321 Stainless Steel Plate Data Sheet Specification
| Grade | A240 321 Plate |
| Thickness | 4.8mm - 101.6mm thickness |
| Width | 1219 to 2438mm or customized |
| Length | 1000mm-6096mm or Customer's Requirement |
| Surface | BA, 2B, NO.1, NO.3, NO.4, 8K, HL, 2D, 1D, HR, CR, Satin (Met with PVC Coated) |
| Technique | Cold Rolled, Hot Rolled |
| Material | 300 Series |
| Shape | Plate, Sheet, Strip, Coil, Foil |
ASTM A240 S32100 Stainless Plate Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
| 321 | min. max | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0-19.0 | - | 9.0-12.0 | 0.10 | Ti=5(C+N)0.70 |
1.4541 AISI 321 Plate Mechanical Properties
- Tensile strength is 75 ksi
- Yield strength is 30 ksi
- Elongation is 40%
- Brinell hardness is 217
- Rockwell B hardness is 95
Alloy 321 Plate Physical Properties
- Density is 0.289 Ibm/in^3
- Melting point is 1398-1446 degrees Celsius
- Elastic modulus is 193 GPa
- The average thermal expansion coefficient between 0-100°C is 16.6μm/m/°C
- The average thermal expansion coefficient between 0-315°C is 17.2μm/m/°C
- The thermal expansion coefficient is 18.6μm/m/°C
- Specific heat capacity is 500 J/kg.K
321 Stainless Steel Vs 321H
321 plate is 321H A low carbon version of stainless steel, typically containing about 0.08% carbon. 321H typically contains about 0.04-0.10% carbon. 321 grades have excellent resistance to intergranular corrosion and high temperature oxidation.
ASTM A240 SS 321 Plate Tolerance
| Specified Thickness (t), in. [mm] | w ≤ 84 [2134] | 84 [2134] < w ≤ 120 [3048] | 120 [3048] < w ≤ 144 [3658] | w > 144 [ 3658] |
| Tolerance Over Specified Thickness, *** in. [mm] | ||||
| t < 3/16 [4.76] | 0.055 [1.35] | 0.070 [1.78] | - | - |
| 3/16 [4.76] ≤ t < 3/8 [9.52] | 0.045 [1.14] | 0.050 [1.27] | 0.085 [2.16] | - |
| 3/8 [9.52] ≤ t < 3/4 [19.05] | 0.055 [1.40] | 0.060 [1.52] | 0.085 [2.16] | 0.090 [2.29] |
| 3/4 [19.05] ≤ t < 1 [25.04] | 0.060 [1.52] | 0.065 [1.65] | 0.085 [2.16] | 0.100 [2.54] |
| 1 [25.40] ≤ t < 2 [50.80] | 0.070 [1.78] | 0.075 [1.90] | 0.095[2.41] | 0.115 [2.92] |
| 2 [ 50.80] ≤ t < 3 [76.20] | 0.125 [3.20] | 0.150[3.80] | 0.175 [4.45] | 0.200 [5.08] |
| 3 [76.20] ≤ t < 4 [101.6] | 0.150 [3.81] | 0.160 [4.06] | 0.200 [5.08] | 0.225 [5.72] |
| 4 [101.6] ≤ t < 6 [152.4] | 0.180 [4.75] | 0.200 [5.08] | 0.335 [8.50] | 0.355 [9.02] |
| 6 [152.4] ≤ t < 8 [203.2] | 0.235 [6.00] | 0.255 [6.48] | 0.355 [9.02] | 0.435 [11.0] |
| 8 [203.2] ≤ t < 10 [254.0] | 0.315 [8.00] | 0.335 [8.50] | 0.435 [11.0] | 0.550 [14.0] |
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