Flat steel M50C

  • Flat steel M50C
  • Flat steel M50C
  • Flat steel M50C
Flat steel M50C

M50C General cold work die steel with good machinability,to be made die casting mold,extrusion and injection mold and ejector pins,ejector sleeve,punches,block gauge,measuring tools.
High wear resistance,high toughness,small deformation caused by heat treatment.
Have a high and uniform hardness after heat treatment,heat resisting,resistance to high temperature oxidation,good toughness,machinability and weldability.
Annealing ≤HB255,pre-hardened HRC 40-46/HRC50-55.

 Chemical  Composition

 Sort

 Steel Grade

Chemical  Composition,%

C

Si

Mn

P

S

Cr

Ni

Mo

Plastic Mold Steel

M50C

0.47-0.53

0.17-0.37

0.5-0.8

≤0.03

≤0.03

——

——

——

P20

0.36-0.42

0.2-0.8

0.6-1.2

≤0.025

≤0.015

1.4-2

——

0.3-0.55

P768R

0.36-0.42

0.2-0.8

1-1.5

≤0.025

≤0.015

1.4-2

0.8-1.2

0.3-0.55

P166R

0.35-0.45

≤1

≤0.8

≤0.025

≤0.015

12-14

——

——

Cold Work Steel

D2

1.4-1.6

0.1-0.6

0.1-0.6

≤0.03

≤0.03

11-13

——

0.7-1.2

SKD11

1.4-1.6

≤0.4

≤0.6

≤0.03

≤0.03

11-13

——

0.8-1.2

O1

0.85-1

0.1-0.5

1-1.4

≤0.03

≤0.03

0.4-0.7

——

——

Hot Work Steel

H13

0.32-0.45

0.8-1.25

0.2-0.6

≤0.03

≤0.03

4.75-5.5

——

1.1-1.75

High Speed Tool Steel

M2

0.8-0.9

0.2-0.45

0.15-0.4

≤0.03

≤0.015

3.8-4.4

——

4.5-5.5






V

W

Cu

Cu+Ni

——

——

≤0.3

≤0.55

——

——

≤0.3

≤0.55

——

——

≤0.3

——

——

——

≤0.3

≤0.55

0.5-1.1

——

——

≤0.75

0.2-0.5

——

≤0.3

≤0.55

≤0.3

0.4-0.6

——

≤0.75

0.8-1.2

——

——

≤0.75

1.75-2.2

5.5-6.75

≤0.3

≤0.55



Delivery Hardness


 Steel Grade

Hardness HB(HRC)

Quenched and  Tempered Condition

Annealed Condition(Normal ized)

M50C

——

200-245HB

P20

285-330HB(30-36HRC)

≤235HB

P768R

285-330HB(30-36HRC)

≤235HB

P166R

285-330HB(30-36HRC)

≤229HB




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