Hot Sale Din 1 7225 Jis Scm440 Aisi 4140 Steel Round Bar Warehouse - China

AISI 4140 Steel Round Bar Details:

1 - Surface Treatment

Plate: Origin Black, Orign cold rolled bright, Machined, Grinded

Bar: Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded 2 - Heat treatment specification

Heat treatment standard: quenching at 850℃, oil cooling; tempering at 560℃, water cooling, oil cooling; 3.4140 Steel Applications

AISI 4140 steel round bar is an alloy structural steel with good strength and good comprehensive mechanical properties after heat treatment.

It has good manufacturability.

The maximum operating temperature is 427°C.

It is used to manufacture forgings that require higher strength and larger quenched and tempered section than 35CrMo steel, and can also be used to manufacture turbine fasteners, tool bodies, dies, brake shoes, etc.

4 - SAE AISI 4140 steel heat treatment

(1)Machinability

In the annealed condition, the alloyed tool steel 1.7225 has good machinability

(2)Training

DIN 1.7225 steel has high ductility.

It can be shaped in the annealed state using conventional techniques.

More pressure or force is required to form because it is tougher than plain carbon steels.

(3)Welding

Alloy steel 1.7225 can be welded with all advanced techniques.

However, the mechanical properties will be affected if it is welded in the heat treated condition and post-weld heat treatment should be performed.

(4)Heat treatment

1.7225 tool steel is heated to 845°C (1550°F) and then oil quenched.

Before hardening, it can be normalized by long heating to 913 °C (1675 °F) and then air cooling.

(5)Forge

It is forged at 926 to 1205 °C

(6)Hot working

4140 steel can be hot worked at 816 to 1038 °C (1500 to 1900 °F).

(7)Cold working

1.7225 steel can be cold worked in the annealed condition using conventional methods.

(8)Glow

Heat it to 800 – 850 °C, hold until the temperature is uniform throughout the section and cool in the kiln.

(9)Normalize

Heat the 1.7225 alloy steel to 870-900℃, hold until the temperature is uniform throughout the section, soak for 10-15 minutes, and cool in still air.

(10)Cranking

DIN 1.7225 steel can be tempered at 205 to 649 °C (400 to 1200 °F) depending on the desired hardness.

The hardness of the steel can be increased if the tempering temperature is lower.

For example, a tensile strength of 225 ksi can be achieved by annealing at 316 °C (600 °F), and a tensile strength of 130 ksi can be achieved by annealing at 538 °C (1000 °F).

(11)Hardening

Alloy steel according to DIN 1.7225 can be hardened by cold forming or heating and quenching.

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Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 076985475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , Guangdong , China

• Email:

• Website: https://songshunsteel.com/

• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
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