ASTM A387 Gade 12
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The ASTM A387 specification is the Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum intended primarily for use in welded boilers and pressure vessels designed for elevated temperature service. The two grades SSAB produces are available as Class 1 and/or Class 2.
| Grade | Product type | Thickness (in) |
Width (in) |
Length (in) |
|---|---|---|---|---|
| Grade 12 | Plate | 0.276 - 2.00 | 75 - 129.9 | 154 - 590 |
Width: Inquire for widths and lengths outside the noted ranges.
| Product type | Grade | Thickness (in) |
UTS (ksi) | Elongation in 2" 1) (min %) |
Elongation in 8" 1) (min %) |
|---|---|---|---|---|---|
| Plate | Grade 12 Class 1 | 0.276 - 2.00 | 55 - 80 | 22 | 18 |
| Plate | Grade 12 Class 2 | 0.276 - 2.00 | 65 - 85 | 22 | 19 |
1) Refer to ASTM A20/A20M for Elongation adjustments based on plate thickness.