ASTM A387 Grade 5 Class 2
A387 Grade 5 Class 2 – high quality chromium-molybdenum alloy steel plate, ideal for use in pressure vessels and industrial boilers due to it’s excellent heat resistant and anti corrosion properties.
We can supply plates from our own stockholding in Birmingham or directly from the mill and all plates come with mill test certification and individual stampings.
Chromium & Molybdenum content (according to the ASTM specification):
| Designation | Nominal Chromium Content (%) | Nominal Molybdenum Content (%) |
|---|---|---|
| A387 Grade 5 | 5.00% | 0.50% |
Tensile Requirements for Class 2 Plates:
| Designation | Requirement | Grade 5 |
|---|---|---|
| A387 Grade 5 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 45 [310] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % | 45 (measured on round specimen) 40 (measured on flat specimen) |
Chemical Requirements:
| Carbon (C) | % |
| Heat Analysis: Product Analysis: | 0.15 max 0.15 max |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: | 0.30 - 0.60 0.25 - 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: | 0.035 0.035 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: | 0.030 0.030 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: | 0.50 max 0.55 max |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: | 4.00 - 6.00 3.90 - 6.10 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: | 0.45 - 0.65 0.40 - 0.70 |