T8 Special Steel

Specifications

Special Steel T8
1).Technique:Forged and Hot-rolled
2).Dia: 80~800mm Length:2000-13000mm

 
1. Standards:JIS SK5 ,DIN 1.1830,GB:T8Mn
 
2. Surface: Black surface/Turned/Ground

3. Process: EAF+LF+VD+ Forged+ Heat Treatment (Annealed, Normalized, Q+T)

4. Machine Capability

    Hardness:annealing, ≤187HB,
    indentation diameter≥4.4 mm;
    Quenching, ≥62HRC
    Heat treatment specification: sample quenching 780 - 800 °C, water cooling

5. Chemical Composition (%):
 
C
 Si
 Mn
 P
 S
 
0.80-0.90
 0.35(max)
 0.40-0.60
 0.035(max)
 0.03(max)
 
 
6. Inspection: 100% Ultrasonic according to the test standards:SEP1921-84,GR.3 CLASS C/C
 
7. Packing situation: standard seaworthy packing or as customer required
 

 
Application:Suitable for making cross section biggish tools because it has good riqidity and good abrasion after heat treatment
 
 
 
Note:
 
According to national standard (GB)for our products, if not, supply according to national standards(GB) or agreement.