sae 4140 quenched and tempered steel round bar

sae 4140 quenched and tempered steel  round bar

SAE  4140 round steel bar  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  4140 round steel bar 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

SAE 4140 round steel bar material quenched and tempered q&t steel bar we supply:

1. Brief introduction:

2. SAE 4140 round steel bar material:

3. SAE 4140 round steel bar composition:

4. SAE 4140 round steel bar mechanical properties:

Q&T Application

Q&T steel bars are widely used to produce various components such as:
Bolts:

high strength stud bolt, threaded rods, wind power bolt, prestressed anchor bolts, post stressed anchor bolt, steel tie rod, tie bar, tension rod, tension bar etc.

Shafts: shaft, axle shaft, crankshaft, shaft for sleeve, linear shaft, pump shaft, rotor shaft, sensor shaft, spline shaft, drive shaft, mandrel shaft, transmission shaft, screw rod etc.

Hydraulic components:hydraulic shafts, piston rod, flanges, gear, pin etc. 

Raw materials steel bars used for CNC machines, precision CNC machines etc.

Mould: Ejector pins and Ejector rods

Production Process

Production Facilitie

Inspection

Company Information

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

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