Q & T закаленные ASTM 4140 42crmo4 шестигранные легированные стальные стержни

SAE AISI ASTM 4140 is a Chromium-Molybdenum through-hardening steel of medium hardenability. It is a general purpose high-tensile steel with medium strength level and good impact properties.

Quenching and Tempering, abbreviated as Q&T is a king of processing that strengthen or harden steel bars by heating the materials and then cooling in water, oil or other liquid medium, that rapidly the change from austenite to perlite to get the proper properties for various usage. The quenched & tempered steel bar materials are usually with carbon from 0.30% - 0.60%, it is widely used as merchant bars in components of various machines.

SAE AISI ASTM 4140 material quenched and tempered q&t steel bar we supply includes following advangtages:

Consistent mechanical properties

Deep mechanical properties (from surface to the center according to your requirement)

Even hardness on the whole bars

Tougher and Increased strength

No brittle, UT testing

Precision size tolerance

Good straightness

Good Roughness

Professional technical service

Competitive price

Fast delivery

Specification of SAE AISI ASTM 4140 material quenched and tempered q&t steel bar we supply:

1. Brief introduction:

2. 4140 steel material:

3. 4140 steel chemical composition:

 4. 4140 steel mechanical properties:

5. 4140 steel bar photos:

Quenched & Tempered steel hexagonal bars

Established in April, 2009, under the leadership of the builder who is specialized in steel producing for 25 years, with rich steel technology and knowledge, LAIWU LE REN TRADE CO., LTD. Forges one professional steel exporting team and builds one steel further processing factory.

Supplying professional Service

Our management philosophy: To exceed customers’ expectation; To realize employees’ dream. As a processional steel exporting company, we aim to help the customers to create the commercial value by supplying steel solutions, to solve customers’ pain points and to supply efficient, thoughtful and professional service.

Focusing on high-quality goods

Our steel processing factory, SHANDONG LE SHAN MACHINERY CO., LTD aims to provide personalized demand products with good mechanical properties. Our factory is equipped with advanced machines such as cold drawing machines, peeling machines, fine straightening machines, fast cooling cutting machines, centerless grinding machines, continuous annealing furnaces, medium frequent Q&T machines, Ultra testing and Eddy current testing assembly line and complete testing equipment in Lab under the guidance of ISO9001 Quality Management System. Our products are widely used in the high strength and prestressed projects in industries of oil & gas, petrochemical, bridge, tunnel, wharf, steel structure construction etc. The annual productivity is 40,000.00 tons.