ASME SA387
The ASME SA387 standard covers the supply of weldable chrome molybdenum alloy steel plates for pressure vessels used in elevated temperature service.
The added molybdenum and chromium provides excellent corrosion resistance and high temperature resistance respectively.
ASME SA387 standard plates are used by the world’s leading fabricators who in turn, supply primarily to the oil and petrochemical industry. Applications for ASME SA387 include pressurised vessels, industrial boilers, heat exchangers and pipework.
Sourced from some of Western Europe’s finest steel mills, Masteel UK Limited stock a wide range of ASME SA387 Class 2 plates which are available for shipment worldwide.
SA387 Grade 91 Class 2
Where resistance to high temperature and good anti-corrosion characteristics are required, ASME SA387 Grade 91 Class 2 carbon alloy steel plate is a material to consider. It is a pressure vessel grade steel which is used commonly by fabricators who supply the oil and gas industry.
Due to the materials excellent corrosion resistant properties, SA387 Grade 91 is also an option for use in sour service environments. The material has good weldability and with its heat resistant qualities, the material is a highly versatile steel which can be used in numerous applications.
Masteel can supply SA387 Grade 91 steel plate from stock to global destinations with mill certification and stampings.
Chromium & Molybdenum content (according to the ASME specification):
| Designation | Nominal Chromium Content (%) | Nominal Molybdenum Content (%) |
|---|---|---|
| A387 Grade 91 | 9.00% | 1.00% |
Tensile Requirements for Class 2 Plates
| Designation | Requirement | Grade 91 |
|---|---|---|
| A387 Grade 91 | Tensile strength, ksi [MPA] | 85 to 110 [585 to 760] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 60 [415] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % |
Chemical Composition of ASME SA387 Grade 91 Class 2
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.08 – 0.12 0.06 – 0.15 |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.30 – 0.60 0.25 – 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.020 0.025 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.010 0.012 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.20 – 0.50 0.18 – 0.56 |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
8.00 – 9.50 7.90 – 9.60 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.85 – 1.05 0.80 – 1.10 |
| Nickel (Ni) | % |
| Heat Analysis: Product Analysis: |
0.40 0.43 |
| Vanadium (Vn) | % |
| Heat Analysis: Product Analysis: |
0.18 – 0.25 0.16 – 0.27 |
| Columbium (Nb) | % |
| Heat Analysis: Product Analysis: |
0.06 – 0.10 0.05 – 0.11 |
| Nitrogen (N) | % |
| Heat Analysis: Product Analysis: |
0.030 – 0.070 0.025 – 0.080 |
| Aluminium (Al) | % |
| Heat Analysis: Product Analysis: |
0.02 0.02 |
| Titanium (Ti) | % |
| Heat Analysis: Product Analysis: |
0.01 0.01 |
| Zirconium (Zr) | % |
| Heat Analysis: Product Analysis: |
0.01 0.01 |
ASME SA387 Grade 22 Class 2
We supply ASME SA387 Grade 22 Class 2 plates to global fabricators serving the oil, gas and petrochemical industry.
These industries require a pressure vessel grade steel which works well in elevated temperatures and our material serves this purpose well. And with good corrosion and oxidation resistance, SA387 Grade 22 Class 2 plates are a good option for sour gas environments too.
Masteel stock SA387 Grade 22 carbon alloy plates and are able to dispatch worldwide.
Equivalents
| BS | EN | ASTM/ASME | DIN |
|---|---|---|---|
| 622-515B | 10CrMo910 | A/SA387-22-2 | 10CrMo910 |
Chromium & Molybdenum content (according to the ASME specification):
| Designation | Nominal Chromium Content (%) | Nominal Molybdenum Content (%) |
|---|---|---|
| A387 Grade 22 | 2.25% | 1.00% |
Tensile Requirements of Class 2 Plates
| Designation | Requirement | Grade 22 |
|---|---|---|
| A387 Grade 22 | 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 S387 Grade 22 Class 2
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.05 – 0.15 0.04 – 0.15 |
| 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: |
0.035 0.035 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.50 max 0.50 max |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
2.00 – 2.50 1.88 – 2.62 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.90 – 1.10 0.85 – 1.15 |
ASME SA387 Grade 12 Class 2
Engineered for use in elevated temperature service, ASME SA387 Grade 12 is a chrome molybdenum carbon alloy steel for use in weldable pressure vessels and industrial boilers.
The material benefits from added chromium which provides excellent corrosion and oxidation resistance making it ideal for sour service applications in the oil and gas industry.
Masteel stocks SA387 Grade 12 Class 2 and can dispatch to any destination, worldwide. All our plates come with mill certification and stampings.
Equivalents
| Designation | Nominal Chromium Content (%) | Nominal Molybdenum Content (%) |
|---|---|---|
| A387 Grade 12 | 1.00% | 0.50% |
Chromium & Molybdenum content (according to the ASME specification):
| Designation | Requirement | Grade 12 |
|---|---|---|
| A387 Grade 12 | Tensile strength, ksi [MPA] | 65 to 85 [450 to 585] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 40 [275] | |
| Elongation in 8 in. [200mm], min % | 19 | |
| Elongation in 2 in. [50mm], min, % | 22 | |
| Reduction of area, min % |
Tensile Requirements for Class 2 Plates
| BS | EN | ASTM/ASME | DIN |
|---|---|---|---|
| 620B | 13CrMo45 | A/SA387-12-2 | 13CrMo44 |
Chemical Composition of ASME SA387 Grade 12 Class 2
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.05 – 0.17 0.04 – 0.17 |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.40 – 0.65 0.35 – 0.73 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.15 – 0.40 0.13 – 0.45 |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
0.80 – 1.15 0.74 – 1.21 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.45 – 0.60 0.40 – 0.65 |
ASME SA387 Grade 11 Class 2
As a pressure vessel grade steel for use in elevated temperature service, ASME SA387 Grade 11 Class 2 is used in a variety of industries and is highly effective, particularly in the oil, gas and petrochemical industry, where liquids and gases are often stored at higher temperatures.
The higher levels of chromium also provide excellent corrosion and oxidation resistance, which is a must in sour gas applications.
Masteel supplies SA387 to clients and fabricators worldwide from our substantial stockholding here in the UK.
Please refer to our technical specifications below for ASME SA387 Grade 11 Class 2.
Chromium & Molybdenum content (according to the ASME specification):
| Designation | Nominal Chromium Content (%) | Nominal Molybdenum Content (%) |
|---|---|---|
| A387 Grade 11 | 1.25% | 0.50% |
Tensile Requirements for Class 2 Plates
| Designation | Requirement | Grade 11 |
|---|---|---|
| A387 Grade 11 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 43 [310] | |
| Elongation in 8 in. [200mm], min % | 18 | |
| Elongation in 2 in. [50mm], min, % | 22 | |
| Reduction of area, min % |
Chemical Composition of SA387 Grade 11 Class 2
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.05 – 0.17 0.04 – 0.17 |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.40 – 0.65 0.35 – 0.73 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.50 – 0.80 0.44 – 0.86 |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
1.00 – 1.50 0.94 – 1.56 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.45 – 0.65 0.45 – 0.70 |
SA387 Grade 9 Class 2
SA387 Grade 9 Class 2 – weldable carbon steel plates for pressure vessels and boilers used in elevated temperatures. The material benefits from added chromium and molybdenum which gives the steel greater corrosion resistance and resistance to heat. SA387 Grade 9 is used by fabricators who serve the oil, gas and petrochemical industry.
ASME SA387 Grade 9 is available ex stock form our UK warehouse and we can dispatch to clients on a global basis. As with all our carbon steel plates, the material comes with mill certification and stampings.
Chromium & Molybdenum content (according to the ASME specification):
| Description | Grade 60 |
|---|---|
| Tensile strength (ksi) | 60-80 |
| Tensile strength (MPa) | 415-550 |
| Yield strength (ksi) | 32 |
| Yield strength (MPa) | 220 |
| Elongation in 200mm (min)(%) | 21 |
| Elongation in 50mm (min) (%) | 25 |
| Thickness (max)(mm) | 205 |
(Minimum values unless stated otherwise)
(Please note: the technical information above is for guidance only – for exact specifications please check with our Sales Team)
Mechanical Properties of SA387 Grade 9 Class 2
| Designation | Requirement | Grade 9 |
|---|---|---|
| A387 Grade 9 | 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 SA387 Grade 9 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: |
0.030 0.030 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.030 0.030 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
1.00 max 1.05 max |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
8.00 – 10.00 7.90 – 10.10 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.90 – 1.10 0.85 – 1.15 |
| Vanadium (Vn) | % |
| Heat Analysis: Product Analysis: |
0.04 max 0.05 max |
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 |