Carbon C: 0.85 ~ 0.95

Si Si: ≤ 0.40

Manganese Mn: 0.90 ~ 1.20

Sulfur S: ≤ 0.030

Phosphorus P: ≤ 0.030

Chromium Cr: 0.50 ~ 0.80

Ni: to allow the residual content of ≤ 0.25

Copper Cu: to allow the residual content of ≤ 0.30

Tungsten W: 0.50 ~ 0.80

Mechanical Properties

Hardness: annealing, 241 ~ 197HB, indentation diameter 3.9 ~ 4.3mm; quenching, ≥ 62HRC

9CrWMn

● Heat treatment and microstructure specifications:

Heat treatment specifications: quenching, 800 ~ 830 ℃ oil cooling.

Forging Process

Take the blank forging temperature limit

9CrWMn

Annealing process

Annealing: Annealing generally use 780-800 degrees incubated 4-6 hours to ≤ 50 degrees / hour , cooled to 550 ° , cooled released isothermal annealing incubated for 2-4 hours using the 700-800 degrees , 670-720 degrees and then incubated maintain 2-4 hours to ≤ 50 degrees / hour cooling rate cooled to 500 degrees baked cooled , annealed hardness of 241-197HB

Physical properties

9CrWMn steel critical temperature are shown in Table 2-12-1 . 9CrWMn critical temperature of steel

Critical points Ac1 Acm Arl Ms

Temperature (approximate ) / ℃ 750 900 700 205

Feature

9CrWMn low alloy steel mold to cold work die steel . The steel has a certain hardenability and wear resistance, small deformation hardening carbide particles distributed uniformly fine .

9CrWMn mold steel used for the manufacture and cross-sectional shape of little more complicated Die and various gauges measuring tools.

A typical example should be using

1 ) Use in the production of cut screen does not zoom in ? more complex shape , High- Precision Die

2 ) can be used for the production of thin touch stamping still pictures , the first frame has decorative embossing molds

3 ) Use in the production of multi- deformed lower, and long ? cutting ? with complex shapes , such as pulling ? long tap, long hinge ? designed using milling ? .

4 ) Use the overall hardened plastic mold

5 ) Use in touch thermosetting plastic molding , requiring ADVANCED abrasion , High- strength die

2 Uses range Editor

Choice of hot work die steel ; thermoset molding and require high wear resistance, high strength cold die steel mold can be used

Delivery status

Delivery of steel in the annealed condition .