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Carbon Steel Pressure Vessel Plates for Intermediate & Higher Temperature Service
 

SA-515

Overview

Course grain steel intended for intermediate / high temperature service in boilers and other PVQ applications. This grade is produced in both the As Rolled and Normalized condition.

 Download SA-515 Chemical and Tensile Requirements PDF (63 KB)

Chemical Requirements

ElementsComposition %
Grade 55
(Grade 380)
Composition %
Grade 60
(Grade 415)
Composition %
Grade 65
(Grade 450)
Composition %
Grade 70
(Grade 485)
Carbon, maxA        
    1 in. (25 mm) and under 0.20 0.24 0.28 0.31
    Over 1 to 2 in. (25 to 50 mm), incl 0.22 0.27 0.31 0.33
    Over 2 to 4 in. (50 to 100 mm), incl 0.24 0.29 0.33 0.35
    Over 4 to 8 in. (100 to 200 mm), incl 0.26 0.31 0.33 0.35
    Over 8 in. (200 mm) 0.26 0.31 0.33 0.35
Manganese, max        
    Heat analysis 0.90 0.90 0.90 1.20
    Product analysis 0.98 0.98 0.98 1.30
Phosphorus, max A 0.035 0.035 0.035 0.035
Sulfur, max A 0.04 0.04 0.04 0.04
Silicon        
    Heat analysis 0.15-0.40 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 0.13-0.45

AApplies to both heat and product analysis

Tensile Requirements

 Grade 55
(Grade 380)
Grade 60
(Grade 415)
Grade 65
(Grade 450)
Grade 70
(Grade 485)
Tensile strength, ksi (MPa) 55-75(380-515) 60-80(415-550) 65-85(450-585) 70-90(485-620)
Yield strength, min. ksi (MPa) 30(205) 32(220) 35(240) 38(260)
Elongation in 8 in. (200 mm), min, % 23A 21A 19A 17A
Elongation in 2 in. (50 mm), min, % 27A 25A 23A 21A

ASee Specification A 20/A 20M.