Product Details

Specification of Structural Alloy Steel Strip for Saw Blade
1. The comparison table for each standard

Steel Grade	GB T 3077-1988	JIS G4103-4105	ASTM A29	ISO
20 Cr	GB 20 CR	SCr240	5120	A20202
30 Cr	GB 30 CR	SCr430	5130	A20302
35 Cr	GB 35 CR	SCr435	5135	A20352
40 Cr	GB 40 CR	SCr440	5140	A20402
50 CrV	GB 50 CRV	SUF10	6150	-
20 CrMo	GB 20CRMO	SCM420	4118	A30202
30 CrMo	GB 30CRMO	SCM430	4130	A30302
35 CrMo	GB 35CRMO	SCM435	4135	A30352
42 CrMo	GB 42CRMO	SCM440	4140	A30422

2. Main Chemical Composition

Unified digital code	Steel Grade	C	Si	Mn	Cr	Mo	V
A20202	20 Cr	0.18-0.24	0.17-0.37	0.50-0.80	0.70-1.00	-	-
A20302	30 Cr	0.27-0.34	0.17-0.37	0.50-0.80	0.80-1.00	-	-
A20352	35 Cr	0.32-0.39	0.17-0.37	0.50-0.80	0.80-1.00	-	-
A20402	40 Cr	0.37-0.44	0.17-0.37	0.50-0.80	0.80-1.00	-	-
A20502	50 CrV	0.46-0.54	1.70-0.37	0.50-0.80	0.80-1.10	-	0.10-0.20
A30202	20 CrMo	0.17-0.24	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25	-
A30302	30 CrMo	0.26-0.34	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25	-
A30352	35 CrMo	0.32-0.40	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25	-
A30422	42 CrMo	0.38-0.45	0.17-0.37	0.50-0.80	0.90-1.20	0.15-0.25	-

3. Mechanical Property

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
20 Cr	835	540	10	40	47	179
30 Cr	885	685	11	45	47	187
35 Cr	930	735	11	45	47	207
40 Cr	980	785	9	45	47	207
50 CrV	1274	1127	10	40	-	-
20 CrMo	885	685	12	50	78	197
30 CrMo	930	785	12	50	63	229
35 CrMo	980	835	12	45	63	229
42 CrMo	1080	930	12	45	63	217

4. Available Size:
1) Thickness: 0.08mm to 2.5mm, Thickness tolerance: +/- 0.02mm
2) Width: 6mm to 600mm, Width tolerance: +/-0.1mm
3) Length: in coil or customized length
We can also provide with other material grade and size according client’s needs

Manufacturing of Structural Alloy Steel Strip for Saw Blade:
- Cold rolling, slitting and edge processing
- Heat treatment: annealing, tempering, hardening
- Cold finishing and polishing

Application of Structural Alloy Steel Strip for Saw Blade:
- Auto Spare Parts: seat belt, clutch, windshield wiper blade, etc
- Gate lock and keys
- Cutting material: saw blade, band saw, chain saw, mill saw, etc.