Overview
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
*Elements represented in percentage
Elements | Grade 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, max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 |
Sulfur, max | 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 |
Tensile Requirements
2.50 in. [65 mm] and Under | Over 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, % | 16 | 14 |
Reduction of area, min, %: | ||
Rectangular specimens | 35 | – |
Round specimens | 45 | 45 |