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Alloy Steel is a type of steel that has been alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. These alloying elements—such as manganese, chromium, nickel, molybdenum, vanadium, and silicon— enhance hardness, toughness, wear resistance, corrosion resistance, and strength at elevated temperatures. Alloy steel products are widely used in applications that demand superior durability, heat resistance, and performance under high stress, making them ideal for industries like oil & gas, power generation, petrochemical, automotive, and construction. By adjusting the chemical composition and heat treatment process, alloy steels can be tailored to meet specific performance requirements for a wide range of critical applications.
| Product | Grades |
|---|---|
| Refractory Anchors | ASTM A182 F1, ASTM A182 F5, ASTM A182 F9, ASTM A182 F11, ASTM A182 F22, ASTM A182 F91 |
| Pipes | ASTM A3335 (P1, P2, P5, P9, P11, P12, P22, P91) |
| Tubes | ASTM A213 (T1, T2, T5, T9, T11, T12, T22, T91) |
| Pipe Fitting | ASTM A234 (WP1, WP2, WP5, WP9, WP11, WP12, WP22, WP91) |
| Forged Fitting | ASTM A182 (F1, F2, F5, F9, F11, F12, F22, F91) |
| Flanges | ASTM A182 (F1, F2, F5, F9, F11, F12, F22, F91) |
| Grade | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Cr (%) | Mo (%) |
|---|---|---|---|---|---|---|---|
| ASTM A182 F1 | 0.10–0.20 | 0.30–0.60 | 0.030 max | 0.030 max | 0.10–0.35 | 0.44–0.65 | 0.44–0.65 |
| ASTM A182 F5 | 0.15 max | 0.30–0.60 | 0.030 max | 0.030 max | 0.50–1.00 | 4.00–6.00 | 0.44–0.65 |
| ASTM A182 F9 | 0.15 max | 0.30–0.60 | 0.030 max | 0.030 max | 0.50–1.00 | 8.00–10.00 | 0.90–1.10 |
| ASTM A182 F11 | 0.15 max | 0.30–0.60 | 0.030 max | 0.030 max | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 |
| ASTM A182 F22 | 0.15 max | 0.30–0.60 | 0.030 max | 0.030 max | 0.50–1.00 | 2.00–2.50 | 0.87–1.13 |
| ASTM A182 F91 | 0.08–0.12 | 0.30–0.60 | 0.020 max | 0.010 max | 0.20–0.50 | 8.00–9.50 | 0.85–1.05 |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| ASTM A182 F1 | 415 min | 205 min | 20 min | 143–187 |
| ASTM A182 F5 | 415 min | 205 min | 20 min | 143–197 |
| ASTM A182 F9 | 585 min | 275 min | 20 min | 170–217 |
| ASTM A182 F11 | 415 min | 205 min | 20 min | 143–197 |
| ASTM A182 F22 | 415 min | 205 min | 20 min | 143–197 |
| ASTM A182 F91 | 585 min | 275 min | 20 min | 190–240 |
Alloy steel is known for its exceptional strength, toughness, and resistance to wear, corrosion, and high temperatures, making it an ideal choice for demanding industrial applications.
Used in gears, shafts, bearings, and machine components that require superior strength and durability.
Ideal for pipelines, valves, and drilling tools due to its ability to withstand high pressure and harsh environments.
Used in engine parts, crankshafts, and structural components for its fatigue resistance and strength-to-weight ratio.
Applied in turbine blades, boiler parts, and nuclear reactors due to its high-temperature resistance.
Used in ship parts, offshore platforms, and marine fasteners for corrosion resistance and strength.
Essential for making cutting tools, dies, and molds that require hardness and wear resistance.