ASTM A709 specification covers carbon and high-strength low-alloy steel structural shapes, plates, and bars and quenched and tempered alloy steel for structural plates intended for use in bridges. Seven grades are available in four yield strength levels as follows:
Grade U.S. [SI] Yield Strength, ksi [MPa]
36 [250] 36 [250]
50 [345] 50 [345]
50S [345S] 50 [345]
50W [345W] 50 [345]
HPS 50W [HPS 345W] 50 [345]
HPS 70W [HPS 485W] 70 [485]
HPS 100W [HPS 690W] 100 [690]
For Grades50W[345W],HPS50W[HPS345W],and HPS70W[HPS485W], the steel shall be made to fine grain practice. For quenched and tempered Grades HPS 50W [HPS 345W] and HPS 70W [HPS 485W], the heat treatment shall be performed by the manufacturer and shall consist of heating the steel to not less than 1650°F [900°C], quenching it in water or oil, and tempering it at not less than 1100°F [590°C]. The heat-treating temperatures shall be reported on the test certifi-cates.
ASTM A709 Grade HPS70W Chemical composition:
|
C |
Si |
Mn |
P |
S |
Mo |
Ni |
Cr |
|
≤0.11 |
0.30-0.50 |
1.10-1.50 |
≤0.020 |
≤0.020 |
0.02-0.08 |
0.25-0.40 |
0.25-0.40 |
ASTM A709 Grade HPS70W Mechanical properties:
|
Yield Strength Mpa |
Tensile Strength Mpa |
Elongation in 2 in. % |
|
≧485 |
585-760 |
≧19 |
Shanghai Katalor can supply Steel plate ASTM A709 Grade HPS70W specification with stock or directly from the mill. We also offer an in house profiling service where the Steel plate ASTM A709 Grade HPS70W specification can be cut to the size or shape you require.If you need Steel plate ASTM A709 Grade HPS70W specification,please feel free contact with us.
