ASTM A662 boiler steel plate pressure vessel steel sheet introduction:
ASTM A662 boiler steel plate pressure vessel steel sheet covers three grades: A662 grade A, A662 grade B, A662 grade C. Chemical composition difference of the three A662 steel grades is mainly for Mn element, increasing of Mn content in ASTM A662 boiler steel plate pressure vessel steel sheet will improve yield and tensile strength character.
The maximum ihickness of ASTM A662 boiler steel plate pressure vessel steel sheet is limiled only by the capacity of ihe composition to meet the specilied mechanical property requirements. All ASTM A662 boiler steel plate pressure vessel steel sheets over 40 mm in thickness shall be normalized. ASTM A662 boiler steel plate pressure vessel steel sheets of grades B and C, 40 mm and under in thickness, are normally supplied in the as-rolled condition. The plates may be ordered normalized or stress relieved, or both.
ASTM A662 boiler steel plate pressure vessel steel sheet chemical composition:(Product analysis)
| Grade | C | Si | Mn | P | S |
| A662 grade A | 0,17 | 0.13-0.45 | 0.84-1.46 | 0.025 | 0.025 |
| A662 grade B | 0,22 | 0.13-0.45 | 0.79-1.62 | 0.025 | 0.025 |
| A662 grade C | 0,24 | 0.13-0.55 | 0.92-1.72 | 0.025 | 0.025 |
ASTM A662 boiler steel plate pressure vessel steel sheet mechanical properties:
| Grade | Yield strength, min,ksi [Mpa] | Tensile strength, ksi [Mpa] | Elongation in 8in. [200mm], min, % | Elongation in 2in. [50mm], min, % |
| A662 grade A | 40 [275] | 58-78 [400-540] | 20 | 23 |
| A662 grade B | 40 [275] | 65-68 [450-585] | 20 | 23 |
| A662 grade C | 43 [295] | 70-90 [485-620] | 18 | 22 |
ASTM A662 steel equivalent grades:
Warning! Only for reference
| ASTM | EN10028 | JIS | ISO |
| A662 grade A | - | G3115-SPV235G3126-SPV235 | - |
| A662 grade B | -2-P295GH | - | P290 |
| A662 grade C | - | G3115-SGV315 | P315 |
ASTM A662 boiler steel plate pressure vessel steel sheet application:
ASTM A662 boiler steel plate pressure vessel steel sheet a kind of carbon-manganese-silicon steel intended primarily for service in welded pressure vessels where improved low temperature notch toughness is important.
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