ASTM A515 For Pressure Vessel Plates, Carbon Steel

ASTM A 515M Carbon Steel Pressure Vessel Plates, for Intermediate- and Higher-Temperature Service

carbon-silicon steel plate specification

Grade U.S. [SI]

Tensile Strength,
ksi [MPa]
60 [415] 60–80 [415–550]
65 [450] 65–85 [450–585]
70 [485] 70–90 [485–620]

Chemical Requirements

Elements Composition, %
Grade 60[Grade 415] Grade 65[Grade 450] Grade 70[Grade 485]
Carbon, maxA:
    1 in. [25 mm] and under 0.24 0.28 0.31
    Over 1 to 2 in. [25 to 50 mm], incl 0.27 0.31 0.33
    Over 2 to 4 in. [50 to 100 mm], incl 0.29 0.33 0.35
    Over 4 to 8 in. [100 to 200 mm], incl 0.31 0.33 0.35
    Over 8 in. [200 mm] 0.31 0.33 0.35
Manganese, max:
    Heat analysis 0.90 0.90 1.20
    Product analysis 0.98 0.98 1.30
    Phosphorus, maxA 0.035 0.035 0.035
    Sulfur, maxA 0.035 0.035 0.035
Silicon:
    Heat analysis 0.15–0.40 0.15–0.40 0.15–0.40
    Product analysis 0.13–0.45 0.13–0.45 0.13–0.45
A Applies to both heat and product analyses.

Tensile Requirements

Grade
60 [415] 65 [450] 70 [485]
Tensile strength, ksi [MPa] 60–80 [415–550] 65–85 [450–585] 70–90 [485–620]
Yield strength, min,ksi[MPa] 32 [220] 35 [240] 38 [260]
Elongation in 8 in. [200 mm], min, %A 21 19 17
Elongation in 2 in. [50 mm], min, %A 25 23 21