As a leading alloy steel & engineering steel supplier in the global market, we are very flexible with the special steel that we can provide for you. If you are unsure about which steel is right for you, just send us an email and we will work with you to get it right.

We supply wide range of steel as below categories.

4140 alloy steel material is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon alloy steel, Oil Quenched & Tempered Hardenss is 28-34 HRC.4140 Annealing delivery hardenss less than 250HB.

we have more 16 years experience in 4140 steel plate, round bar, flat bar, square supply.AISI 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. The following datasheet gives an overview of AISI 4140 alloy steel.

AISI /SAE 4340 Steel is a Alloy Structural Steel belong to ASTM A29/A29M Steel Grade standard. AISI 4340 used in Oil and Gas industry and Large Machinery Strutural. 4340 Steel China Supplier and factory Otai Special Steel Supply 4340 steel in Round bar, Plate, Flat bar, Square, Forging Ring and others any shape.

AISI 8620 alloy steel is a common, carburizing alloy steel. This alloy steel is flexible during hardening treatments,and thus enabling improvement of case/core properties. The following datasheet will provide more details about AISI 8620 tool steel.