SKD 11 Cold Work Tool Steel

A:Specification


Product
Material Spec.(mm) Length(mm) Remark
Cold Work Steels SKD11圆 Φ16-50 3000-5800 Hot Rolled、Annealed

B: Performance Table

  General
Information
Steel with hardening air, oil and salts bath. It features good resistance and toughness for hot and treatments. Normally used for mould carrier frames, containers for pressure casting, sub-dies for extrusion of aluminum, plastic moulds.
Comparable
Standards
AISI/SAE     DIN            W.N      AFNOR          BS      SIAU
D2        X155CrVMo12_1     1.2379   Z160CDV12     BD2     KORV
Chenical
Analysis (%)
C        Mn        Si     Cr      MO       V           P        S
1.50-1.60   0.15-0.45    0.10.40   11.0-12.0   0.60-0.80  0.90-1.10      ≤0.03       ≤0.03

Heat Treatment

Isothermal annealing:
Heat to 850÷880℃;
Funace cooling to 770℃ and hold at temperature for at least 10 hours;
Cool by10℃/h to 720℃;
Cooling in air.
Stress relieving :
To be carried out after machining and befor the final heat trestment,
-Heat to 650÷700℃ , hold for 4/6 hours ;
-Furnace cooling to 330÷350℃
-Cooling in air
Hardening ;
-Initial preheating to 350÷450℃;
-Second preheating to 750÷850℃ in sait bath at 850℃;
-Austenitizing at 960÷100℃;
-Cooling in air or in oil if large parts.
Quenched hardness:64÷65HRC
Tempering:
In the temperature range 150÷300℃ with minimum holding time 3h. For parts hardened at 1080÷1100℃, a first will be carried out at 500÷550℃ in order to expioit secondary handness, foliowed by a second tempering at 180/300℃.

Tempering Curve (only for reference):

Henan AnSon Steel Co.,Ltd E-mail: info@minmetalschina.com

Tel: (86) 372 5065803 or (86) 372 5065802 or (86) 372 5065803
Fax: (86) 372 5065803 614 Zip Code:455000

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Henan AnSon Steel Co.,Ltd E-mail: info@minmetalschina.com

Tel: (86) 372 5065803 or (86) 372 5065802 or (86) 372 5065803 Fax: (86) 372 5065803 614 Zip Code:455000

Add: uite A,8/F Jinhao Business Bld.,Renmin