Contact
Address:
Baiguantun Economic Development Zone, Fengrun District,Tangshan City
Telephone/fax:
0086-315-5507099 （Chinese)
0086-315-5115988 （English）
Email:
mike@sgsteelball.com （Intl）
Address: Baiguantun Economic Development Zone, Fengrun District,Tangshan City Email：tssgyj@126.com Tel:0086-315-5507099 Fax:0086-315-5115988
Classification
SGFB-4 (C:0.55%,Cr:0.8%)
1.Chemical Composition:
|
Product Name |
Grade |
Chemical Composition（%） |
|||||||
|
C |
Si |
Mn |
Cr |
Mo |
Cu |
P |
S |
||
|
Forged Steel Ball |
SGFB-4 |
0.52-0.66 |
0.17-1.85 |
0.60-0.90 |
0.70-1.10 |
≤0.50 |
≤0.30 |
≤0.035 |
≤0.035 |
2.Hardness、Toughness、Metallurgical Structure & Fatigue Life:
|
Grade |
Grade |
Surface Hardness |
Core Hardness |
Volumetric Hardness |
Impact-toughness |
Metallurgical Structure |
Dropping Balls Test/Fatigue Life Test |
|
SGFB-4 |
Φ90 |
60-65 |
59-64 |
60-64 |
≥13 |
M+B+C |
≥12000 |
|
Φ100~Φ110 |
59-64 |
57-62 |
59-64 |
||||
|
Φ120~Φ127 |
57-63 |
54-60 |
56-62 |
||||
|
Φ130 |
55-60 |
50-55 |
53-58 |
||||
|
Φ140 |
53-58 |
45-50 |
50-55 |
||||
|
Φ150 |
50-55 |
40-45 |
48-53 |
||||
|
M-Martensite, B-Bainite, C- Carbide |
|||||||