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SGFB-1 (C:0.4%)

1. Chemical Composition: Product Name, Grade, and Chemical Composition (%): CSiMnCrMoCuPS Forged Steel Balls SGFB-1: 0.37–0.57, 0.17–0.37, 0.5–0.9, ≤1.2, ≤0.30, ≤0.10, ≤0.04, ≤0.04 2. Hardness, Impact Toughness, Microstructure, and Fatigue Life: Grade/Model (mm) | Surface Hardness (HRC) | Core Hardness (HRC) | Bulk Hardness (HRC) | Impact Value (Ak: J/cm²) | Microstructure | Drop‑Ball Impact Fatigue Life (Height: 3.5 m) SGFB-1 Φ25–Φ30: 57–63, 5

Keywords:

SGFB-1 (C:0.4%)

Category:

Forged steel ball

Email:

sgnmcl@126.com

Service Hotline:

+86-315-5507099

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Product Description

1. Chemical Composition:

Product Name

Grade

Chemical Composition (%)

C

Yes

Mn

Cr

Mo

Cu

P

S

Forged steel ball

SGFB-1

0.37-0.57

0.17-0.37

0.5-0.9

≤1.2

≤0.30

≤0.10

≤0.04

≤0.04

 

2. Hardness, impact toughness, microstructure, and fatigue life:

Grade

Model number 
(millimeters)

Surface hardness 
(HRC)

Inner self 
Hardness 
(HRC)

Volume 
Hardness 
(HRC)

Impact value 
(Ak:J/cm 2)

Gold phase 
Organization

Drop-ball impact fatigue life 
(Height 3.5 meters)

SGFB-1

Φ25~Φ30

57-63

50-55

54-59

≥13

M+B+C

Φ25~Φ70

*

Φ40~Φ50

56-62

40-45

48-53

Φ60~Φ70

55-61

35-40

45-50

80≤Φ≤150

10000

Φ80~Φ90

54-60

30-35

40-45

Φ100~Φ150

50-55

27-32

35-40

M—Martensite, B—Bainite, C—Carbides

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