17YRS
WU JII INDUSTRY CO., LTD.
886-4-23593510
886-4-23593529
No. 1, 20th Rd., Industrial Park, Taichung City, Taiwan
www.wujii.com.tw

Products

Standasd & Brand
M340PESR+N
M340PESR+N

Properties

The high quality material BÖHLER M340 ISOPLAST, manufactured by Pressure and Protective gas ESR, was developed by BÖHLER in close co-operation with customers.

Specific heat treatment allows us to achieve well balanced properties profiles, tailored to the application in question.

BÖHLER M340 ISOPLAST is a high performance plastic mould steel with

Excellent corrosion properties, especially in salt water and media containing chloride
Good harden ability and high obtainable hardness after hardening (53-58HRC)
Suitable for heat treatment in vacuum equipment
Fine carbide structure
Good dimensional stability with appropriate heat treatment
Excellent high wear resistance /sharpness durability
Good mach inability
Good polish ability

Specification

Heat treatment information

Heat treatment

Annealing

800 to 850°C 
Cooling in furnace 
Hardness after annealing: max. 260HB

Stress relieving

approx. 650°C 
After through heating, soak for 1 to 2 hours in neutral atmosphere. 
Slow cooling in furnace.

Hardening

980 to 1020°C/Oil 
Holding time after temperature equalization:15 to 20 minutes.

Tempering

Tempering should follow hardening immediately. It is recommended to temper at least twice. 
Time in furnace 1 hour for each 20mm of workpiece thickness but at least 2 hours.

Structure as annealed

Ferrite + carbide

Structure as hardened

Martensite + carbide

Mold
Machine
Vehicle
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