ASTM A588 Grade B is categorized as Alloy Steel. It is composed of (in weight percentage) 0.20%(max) Carbon (C), 0.75-1.25% Manganese (Mn), 0.04% Phosphorus (P), 0.05% Sulfur (S), 0.15-0.30% Silicon (Si), 0.40-0.70% Chromium (Cr), 0.50%(max) Nickel (Ni), 0.001-0.10% Vanadium (V), 0.20-0.40% Copper (Cu), and the base metal Iron (Fe).
Another common designation of ASTM A588 Grade B alloy steel is UNS K12043.
Composition
Element Weight %
C 0.20 (max)
Mn 0.75-1.25
P 0.04
S 0.05
Si 0.15-0.30
Cr 0.40-0.70
Ni 0.50 (max)
V 0.001-0.10
Cu 0.20-0.40
Mechanical Properties
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 7.7-8.03 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
Source: efunda.com
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