60Si2Mn Spring steel

60Si2Mn Spring Steel 1.Dia 80-800mm length:2000-13000mm 2 Technique:Forged 3.Peel or Q+T as required 3.Delivery:30 days

60Si2Mn  Spring Steel

 

1. Standards: ASTM9260/DIN:1.0906 1.5028 1.0961/JIS SUP7 /GB:60Si2MnA

 

2. Surface: Black surface/Turned/Ground

 

 

3. Process:

   EAF+LF+VD+ Forged+ Heat Treatment (Annealed, Normalized, Q+T)

 

4. Machine Capability

 

    Tensile strength (N/mm2Mpa): >=1372(140)

    Elongation: >=5

    Yield strength: >=1225(125)

    Hardness: <=321HB

    Reduction of area:>=30

 

5. Chemical Composition (%):

 

C	Si	Mn	S	P	Cr	Ni	Cu	V	B
0.52-0.60	1.50-2.00	1.00-1.30	0.035(max)	0.035(max)	0.35(max)	0.35(max)	0.25(max)	0.08-0.16	0.0005-0.0035

 

6. Heat treatment

Annealing	750C - furnace cooling - HBS less than 222
Normalizing	830 ~ 860C - air cooling - HBS less than 302
Quenching	850C  oil  HRC>61
HRC after tempering	150C 61,200 C - 60,300 C - 56,400 C - 51, 500 C - 43,550 C - 38,600 C - 33,650 C – 29

  

 7.Inspection: 100% Ultrasonic according to the test standards:SEP1921-84,GR.3 CLASS C/C or by SGS ,AHK or Alex Stewart

 

 

8. Packing situation: standard seaworthy packing or as customer required9. Delivery time: 20 days after order confirmed

 

 

10. Payment: T/T or L/C at sight.

 

60Si2Mn Spring steel