Product Details

CrMo Alloy Steel Bar

1) The comparison table for each standard

Steel Grade	GB	ISO	AISI	JIS	DIN	NF
20Cr	GB20Cr	20Cr4	5120	SCr22,SCr120	20Cr4	-
30Cr	GB34Cr4	34Cr4	5130	SCr2,SCr430	34Cr4	34Cr4
35Cr	GB35Cr	34Cr4	5132	SCr3,SCr435	34Cr4	34Cr4
40Cr	GB40Cr	37Cr4	5140	SCr4,SCr440	41Cr4	41Cr4
45Cr	GB45Cr	41Cr4	5145	SCr5,SCr445	41Cr4	41Cr4
50Cr	GB50Cr	-	5150	SCr445	-	-
20CrMo	-	18CrMo4	-	SCM22,SCM430	-	25CrMo4
30CrMo	GB30CrMo	25CrMo4	4130	SCM2,SCM430	25CrMo4	25CrMo4
30CrMoA	GB30CrMoA	34CrMo4	4130	SCM430	34CrMo4	34CrMo4
35CrMo	GB35CrMo	34CrMo4	4137	SCM3,SCM435	34CrMo4	34CrMo4
42CrMo	GB42CrMo	42CrMo4	4140	SCM440	42CrMo4	42CrMo4

2) Mechanical Properties

Steel grade	Tensile strength (σb/MPa)	Yield point (σb/MPa)	Elongation (δ5/%)	Reduction of Area (ψ/%)	Impact absorbing Energy (Aku2/J)	Brinell Hardness (HBS100/3000)
Steel grade	Tensile strength (σb/MPa)	Yield point (σb/MPa)	Elongation (δ5/%)	Reduction of Area (ψ/%)	Impact absorbing Energy (Aku2/J)	Annealing or High Tempering
20CrMo	885	685	12	50	78	197
30CrMo	930	785	12	50	63	229
35CrMo	980	835	12	45	63	229
40CrMo	1080	930	12	45	63	217
42CrMo	1080	930	12	45	63	217

3)Chemical composition

Steel Grade	C	Si	Mn	Cr	Mo
20CrMo	0.17-0.24	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25
30CrMo	0.26-0.34	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25
35CrMo	0.32-0.40	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25
40CrMo	0.35-0.45	0.15-0.40	0.40-0.70	1.00-1.50	0.50-0.80
42CrMo	0.38-0.45	0.17-0.37	0.50-0.80	0.90-1.20	0.15-0.25

4) Application:

- Boiler
- Motor rotator
- Connection rod
- Large gear and gear
- Large diameter shaft
- Driven gear of booster
- Salvage tools for ocean oil drilling

5) Features:

- High fatigue resistance
- Good plasticity in cold condition
- High quality with competitive price
- Good combination property

Contact details:

Ms Mandy Zhang

Tel:0086-635-8518877 Mobile:0086-15963192138 Fax:0086-635-8510257

Skype: mandy201102 Trademanager: cn209781688

Whatsapp: 0086 159 6319 2138