Alloy Steel: AISI 4130 / AISI 4140 / AISI 4145 / AISI 4330 / AISI 4340 / AISI 8630 Shape: Plate / Bar / Tube / Pipe / Forged / Ring
Alloy Steel 4130
A common general purpose grade of medium carbon, Cr-Mo steel. Flexibility afforded by heat treatment options allows it to attain a range of toughness and strength values. Good hardenability, strength, wear resistance, toughness, and ductility.
Alloy Steel 4140
Normalized: heated to 815°C, air cooled. Medium-carbon steel with high hardenability and good fatigue, abrasion and impact resistance.
Alloy Steel 4145
Oil quenched. Forging temp.: 1205°C (2200°F) max. Annealing temp.: 790 – 845°C. Hardening temp.: 815 – 845°C. Tempered to desired hardness.
Alloy Steel 4330
AISI 4330 is a heat treatable steel alloy (for high strength) containing chromium, nickel and molybdenum. Carbon content is in the 0.30% range and in the heat treated condition the alloy has good toughness and fatigue strength as well as good strength.
Alloy Steel 4340
AISI 4340 has a favorable response to heat treatment (usually oil quenching followed by tempering) and exhibits a good combination of ductility and strength when treated thusly. Uses include piston pins, bearings, ordnance, gears, dies, and pressure vessels.
Alloy Steel 8620
AISI 8620 is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case-hardened part. This case-hardening will result in good wear characteristics.