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High Yield Strength, Quenched & Tempered Alloy Steel For Pressure Vessels
 

SA-517

Overview

Very similar to A 514, except this quenched and tempered grade is used primarily in pressure vessel applications. The elevated physicals of this alloy grade is applicable for environments where added strength is required.
 

Chemical Requirements

ElementsGrade A %Grade B %Grade E %Grade F %Grade H %Grade P %Grade Q %Grade S %
Carbon  
    Heat analysis 0.15-0.21 0.15-0.21 0.12-0.20 0.10-0.20 0.12-0.21 0.12-0.21 0.14-0.21 0.10-0.20
    Product analysis 0.13-0.23 0.13-0.23 0.10-0.22 0.08-0.22 0.10-0.23 0.10-0.23 0.12-0.23 0.10-0.22
Manganese  
    Heat analysis 0.80-1.10 0.70-1.00 0.40-0.70 0.60-1.00 0.95-1.30 0.45-0.70 0.95-1.30 1.10-1.50
    Product analysis 0.74-1.20 0.64-1.10 0.35-0.78 0.55-1.10 0.87-1.41 0.40-0.78 0.87-1.41 1.02-1.62
Phosphorus, maxA 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025
Sulfur, maxA 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025
Silicon  
    Heat analysis 0.40-0.80 0.15-0.35 0.10-0.40 0.15-0.35 0.15-0.35 0.20-0.35 0.15-0.35 0.15-0.40
    Product analysis 0.34-0.86 0.13-0.37 0.08-0.45 0.13-0.37 0.13-0.37 0.18-0.37 0.13-0.37 0.13-0.45
Nickel  
    Heat analysis - - - 0.70-1.00 0.30-0.70 1.20-1.50 1.20-1.50 -
    Product analysis - - - 0.67-1.03 0.27-0.73 1.15-1.55 1.15-1.55 -
Chromium  
    Heat analysis 0.50-0.80 0.40-0.65 1.40-2.00 0.40-0.65 0.40-0.65 0.85-1.20 1.00-1.50 -
    Product analysis 0.46-0.84 0.36-0.69 1.34-2.06 0.36-0.69 0.36-0.69 0.79-1.26 0.94-1.56 -
Molybdenum  
    Heat analysis 0.18-0.28 0.15-0.25 0.40-0.60 0.40-0.60 0.20-0.30 0.45-0.60 0.40-0.60 0.10-0.35
    Product analysis 0.15-0.31 0.12-0.28 0.36-0.64 0.36-0.64 0.17-0.33 0.41-0.64 0.36-0.64 0.10-0.38
Boron 0.0025 max 0.0005-0.005 0.001-0.005 0.0005-0.006 0.0005 min 0.001-0.005 - -
Vanadium  
    Heat analysis - 0.03-0.08 B 0.03-0.08 0.03-0.08 - 0.03-0.08 -
    Product analysis - 0.02-0.09 B 0.02-0.09 0.02-0.09 - 0.02-0.09 -
Titanium  
    Heat analysis - 0.01-0.04 0.01-0.10 0.10 max 0.10 max 0.10 max - 0.06 max
    Product analysis - 0.01-0.05 0.005-0.11 0.11 max 0.11 max 0.11 max - 0.07 max
Zirconium  
    Heat analysis 0.05-0.15c - - - - - - -
    Product analysis 0.04-0.16 - - - - - - -
Copper  
    Heat analysis - - - 0.15-0.50 - - - -
    Product analysis - - - 0.12-0.53 - - - -
Columbium, max  
    Heat analysis - - - - - - - 0.06
    Product analysis - - - - - - - 0.07

aApplied to both heat and product analysis
bMay be substituted for part or all of titanium content on a one for one basis.
cZirconium may be replaced by cerium. When cerium is added, the cerium/sulfur ratio should be approximately 1.5 to 1, based on heat analysis.



Tensile Requirements

Property2.50 in. [65 mm] and UnderOver 2.50 to 6 in. [65 to 150 mm]
Tensile strength 115-135 [795-930] 105-135 [725-930]
Yield strength, min, ksi [MPa] 100 [690] 90 [620]
Elongation in 2 in. [50 mm], min, %A 16 14
Reduction of area, min, %:  
    Rectangular specimens 35 -
    Round specimens 45 45

aSee Specifications A20/A20M for elongation