GB 40CrMnMoS86 / DIN 1.2312 / AISI P20+S mold steel flat bar tool steel

Location:	Huangshi, Hubei, China (Mainland)
Business Type:	Manufacturer
Main Products:	Die Steel, Alloy Steel, Tool Steel, Mould Steel, High-speed Tool Steel

Model No.:	P20+S/ 1.2312 / 40CrMnMoS86
Means of Transport:	Ocean, Land
Production Capacity:	5000 Tons/Month
Packing:	seaworthy packing, steel wire and steel strips bundled,anti-rust oil painting
Delivery Date:	within 50 working days

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Size Available:

Plate: Thickness 40-350mm

Width100m-1000mm

Length 2m—6m

Round: Dia. 60---800mm

Listing Description

1. EAF-LF-VD-ESR Forged

2. ISO 9001 certificated

3. Factory direct sales steady supply

4. Higher resistance to heat checking

Detailed Description

Characteristics:

Round P20+S is with additional sulphur, usually supplied in a quenched and tempered condition. Polishable, better machinability compared to 1.2311.

Applications:

Round P20+S is for making plastic moulds, frames for plastic pressure dies, hydroforming tools.

steel grade:	P20+S/1.2312/ 40CrMnMoS86
specification:	Round bars 60-800mm flats 40-350x100-1000mm
Delivery condition:	EAF+LF+VD+(ESR),forged, annealed, UT tested, peeled or machined
Chemical composition:	C:0.35-0.45 Mn:1.40-1.60 Si:0.30-0.50 Cr:1.80-2.00 Mo:0.15-0.25 P: ≤0.03 S:0.05-0.10
Tolerance:	0/+2mm
UT grade:	SEP1921,Group3, class D/d
Payment item:	T/T,L/C
Delivery time:	30 days or up to the quantity

Equivalent Grades:

GB	DIN	AISI
40CrMnMoS86	1.2312	P20+S

Chemical Composition(for reference only):

Standard	C	Si	Mn	Cr	Mo	P	S
GB/T1299-2000	0.35-0.45	0.30-0.50	1.40-1.60	1.80-2.00	0.15-0.25	≤0.03	0.05-0.10

Quality assurance:

We are the ISO 9001:2000 authentication enterprises and we can provide the enterprise's quality written guarantee for all the exported products.

Surface condition:Black surface/ turning / milling / peeling / polishing.

Hardness:Annealed HBS220 max.

Weight: 20ft: GW: 17.5T; (5.69mX2.13mX2.18m,)

40ft: GW: 22T; (11.8mX2.13mX2.18m)

Heat treatment of Round P20+Stment of Round P20+S

Soft Annealing	Heat to 710-740°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 230.
Stress Relieving	Stress relieving to remove machining stresses should be carried out by heating to approx. 650°C, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening	Harden from a temperature of 830-880oC followed by oil or quenching or warm bath quenching 180-220°C. Hardness after quenching is 51 HRC.
Tempering	°C	100	200	300	400	500	600	700
Tempering	HRC	51	50	48	46	42	36	28

Our Advantages:

1. Good performance in checking heat

2. A large size range for customers' option

3. Nice advantage in terms of resisting thermal shocking

4. ESR to make sure better quality when delivery

5. Black & annealed, peeled or turned optional

6. Manufacturer with advanced technology and good quality control

7. Welcome to visit our large factory at any time

Product Tags: alloy steel die steel flat bar

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