ASME SA387 Grade 5 Class 2
ASME SA387 Grade 5 Class 2 – a high quality chrome molybdenum alloy steel plate intended specifically for use in weldable carbon steel pressure vessels at elevated temperatures. Added molybdenum gives the material greater temperature tensile strength and the chromium provides improved corrosion resistance.
We supply SA387 Grade 5 Class 2 plates from our own stockholding in Birmingham or directly from the mill. All plates come with mill test certification and individual stampings.
Chromium & Molybdenum content (according to the ASME specification):
| Designation | Nominal Chromium Content (%) | Nominal Molybdenum Content (%) |
|---|---|---|
| A387 Grade 5 | 5.00% | 0.50% |
Mechanical Properties of SA387 Grade 5 Class 2
| 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 Composition of ASME SA387 Grade 5 Class 2
| 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 |