Product Details

Product Introduction

GB 9CrWMn SS 2140 BS BO1 Alloy Steel: General purpose oil hardening medium alloyed cold work tool steel with minimum size change, high impact strengthand hardenability, good edge holding, abrasion resistance and machinability properties, dimensionally stable duringheat treatment, high surface hardness and sufficent toughness after hardening and tempering.

Equivalent grades: ASTM O1, DIN 1.2510, JIS SKS3, GB 9CrWMn, SS 2140, BS BO1, KS STS3.

Specification

*Item*
Size (can be customized)	Round	Dia 12mm-500mm	Length 1000mm-6000mm
	*Flat (when forged, production width is 4 times than thickness)**	Thickness 12mm-400mm
		Width 50mm-800mm
Chemical Composition (can be customized)	ASTM O1	C:0.85-1.00, Si:0.10-0.50, Mn:1.00-1.40, Cr:0.40-0.60, V:≤0.30, W:0.40-0.60, P:≤0.030, S:≤0.030
	DIN 1.2510 (100MnCrW4)	C:0.90-1.05, Si:0.15-0.35, Mn:1.00-1.20, Cr:0.50-0.70, V:0.05-0.15, W:0.50-0.70, P:≤0.035, S:≤0.035
	JIS SKS3	C:0.90-1.00, Si:≤0.35, Mn:0.90-1.20, Cr:0.50-1.00, W:0.50-1.00, P:≤0.030, S:≤0.030
	GB 9CrWMn	C:0.85-0.95, Si:≤0.40, Mn:0.90-1.20, Cr:0.50-0.80, W:0.50-0.80, P:≤0.030, S:≤0.030
	SS 2140	C:0.85-1.00, Si:0.20-0.40, Mn:1.10-1.30, Cr:0.40-0.60, V:0.05-0.15, W:0.40-0.60, P:0.030, S:0.020
	BS BO1	C:0.85-1.00, Si:≤0.40, Mn:1.00-1.35, Cr:0.40-0.60, Ni:≤0.40, V:≤0.25, W:0.40-0.60, Cu:≤0.20, Sn:≤0.05
	KS STS3	C:0.90-1.00, Si:≤0.35, Mn:0.90-1.20, Cr:0.50-1.00, W:0.50-1.00, P:≤0.030, S:≤0.030
Process	EAF+LF+VD+ESR+FORGED/ROLLED+Heat Treatment (Annealed,A Normalized, Q+T)
Test and inspection	100% mixed test, 100% crack test, defect depth max.1% of diameter(turned, peeled) or width.100% US test acc. to SEP standard. Ultrasonic test according to SEP 1921-84 G3 C/c or D/d.
Heat treatment	Normalized ; Annealed ; Quenched ; tempered
Surface Condition/Treatment	Black surface; Grinded/Peeled ; Machined;Turned/Bright
Inspection	100% Ultrasonic according to the test standards:SEP1921-84,CLASS C/c or D/d
Payment Terms	T/T;L/C (30% advance payment by T/T, and 70% should be paid against the color scanned copy of BL by T/T or irrevocable L/C at sight)
Trade Terms	FOB; CIF; CFR
Packing	Standard seaworthy packing or as customer required
Shipping Marks	As Buyer/Seller's option. N/M means no marks.
Invoicing	According to acctural weight (25 tons). If the acctural weight ≥ 25 tons, pls fill less to the seller for the over weight according to the PI price.
Size tolerence	0/+2mm for bright / grinded / machined surface, 0/+4mm for black / peeled surface.
Length tolerence	10% shorter length should be allowed.
Quantity tolerence	-10%/+10% for total quantity.
Physical Properties
Density	at 20 °C 7,85 kg/dm3
Thermal conductivity	at 20 °C 30,0 W/(m.K)
Thermal expansion between 20 °C and__°C, m/(mK)	100 °C: 11,5; 200 °C: 12,0; 300 °C: 12,2; 400 °C: 12,5; 500 °C: 12,8
*Heat Treatment*
Annealing	710 - 750 °C
Hardness after Annealing	Max. 220 HB
Stress relieving	Approx. 650 °C
Hot forming	1050 - 850 °C
Hardening	780 - 820°C
Quenching media	Oil, Salt bath ( 220 - 250 °C )
Hardness after quenching	63 - 65 HRC
Hardness after tempering	100 °C: 64 HRC, 200 °C: 62 HRC, 300 °C: 58 HRC, 400 °C: 52 HRC.
Applications	Cutting, blanking, punching and stamping tools and dies up to 6 mm sheet thickness, thread cutting tools, chasers, coldforming tools, arbors, drill bushings, collets, drawing punches, machine knives for the wood, paper and metal workingindustries, woodworking tools, cold trimming dies, shaping wheels, measuring tools and gauges, milling cutters, drills,reamers, taps, broaches, calipers, profile rollers, coining tools, industrial blades, moulds for the plastics industry, knur-ling tools, medium run blanking dies, cold working manrdrels, master engraving rolls and taps, guide rails, plug gages.

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Why Choose Us

About us

1, the company professional to produce and RD more than 100 kinds and 1000 sizes of die / mould / tool steel products more than 10 years;Rich technology strength & strong processing strength & advanced production equipment & complete test instrument & rigor quality management.

Quality control

2, Acceptable materials; UT test; After annealing ,steels are held for a suitable time in sands and cooling slowly; Machining; Tolerance control; Strictly testing; Certification: Mill Certificate Test or third party inspection institution.

Service

3, Sample free provided from inventory; MOQ is 1 metric ton; Reliable quality; Competitive price; In seaworthy packing; Excellente service; Reply within 24 hours.

Product Processing