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Carbon Steel Pressure Vessel Plates for Moderate and Lower Temperature Service
 

SA 516 (Hydrogen Induced Cracking - HIC)

Overview

This material is restricted to extra low sulfur, phosphorus, and other residual elements. HIC tests are performed on a per heat / thickness basis in association with NACE Standard TM0284. CLR (Crack Length Ratio), CTR (Crack Thickness Ratio), and CSR (Crack Sensitivity Ratio) yield excellent results in keeping with the quality of the steel product.

 

 Download SA-516 Chemical and Tensile Requirements PDF (154 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        
    1/2 in. (12.5 mm) and under 0.18 0.21 0.24 0.27
    Over 1/2 to 2 in. (12.5 to 50 mm), incl 0.20 0.23 0.26 0.28
    Over 2 to 4 in. (50 to 100 mm), incl 0.22 0.25 0.28 0.30
    Over 4 to 8 in. (100 to 200 mm), incl 0.24 0.27 0.29 0.31
    Over 8 in. (200 mm) 0.26 0.27 0.29 0.31
Manganese, max        
1/2 (12.5) and under:        
    Heat analysisB 0.60-0.90 0.60-0.90 0.85-1.20 0.85-1.20
    Product analysisB 0.55-0.98 0.55-0.98 0.79-1.30 0.79-1.20
Over 1/2 (12.5) and under:        
    Heat analysis 0.60-1.20 0.85-1.20 0.85-1.20 0.85-1.20
    Product analysis 0.55-1.30 0.79-1.30 0.79-1.30 0.79-1.30
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
BGrade 60 plates 1/2 in. (12.5 mm) and under in thickness may have 0.85-1.20% manganese on heat analysis and 0.79-1.30% manganese on 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.B 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.
BDetermined by either the 0.2% offset method or the 0.5% extension-under-load method.