ASTM A515 Gr70 Iron Boiler Steel Plate

ASTM A515 Gr.70 Iron Boiler Steel Plate

ASTM A515 STEEL (GRADE 70) has greater strength than A285 and intended for intermediate and high temperature boilers and pressure vessels. It is a silicon killed, coarse grained steel that requires careful welding techniques.

 

Component Elements Properties Metric English
Carbon, C 0.35 % 0.35 %
Iron, Fe 98 % 98 %
Manganese, Mn 1.2 % 1.2 %
Phosphorous, P 0.035 % 0.035 %
Silicon, Si 0.15 – 0.40 % 0.15 – 0.40 %
Sulfur, S 0.040 % 0.040 %

 

Mechanical Properties Metric English
Tensile Strength

Ultimate

480 MPa 69600 psi
Tensile Strength

Yield

265 MPa 38400 psi
Rupture Strength 87.0 – 108 MPa
at Temperature 500 °C,
Time 3.60e+8 sec
12600 – 15700 psi
at Temperature 932 °F,
Time 100000 hour
  100 – 168 MPa
at Temperature 475 °C,
Time 3.60e+8 sec
14500 – 24400 psi
at Temperature 887 °F,
Time 100000 hour
  129 – 246 MPa
at Temperature 450 °C,
Time 3.60e+8 sec
18700 – 35700 psi
at Temperature 842 °F,
Time 100000 hour
  161 – 314 MPa
at Temperature 425 °C,
Time 3.60e+8 sec
23400 – 45500 psi
at Temperature 797 °F,
Time 100000 hour
  204 – 364 MPa
at Temperature 400 °C,
Time 3.60e+8 sec
29600 – 52800 psi
at Temperature 752 °F,
Time 100000 hour
Bulk Modulus 160 GPa 23200 ksi
Shear Modulus 80.0 GPa 11600 ksi

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