1.2312 P20+S Hot Rolled Plastic Mould Steel Plate

• Technique: Hot Rolled
• Standard: AISI, JIS, ASTM, DIN, BS, GB
• Certification: RoHS
• Production process: EF/EAF+LF+VD/ESR
• Technology: hot rolled/forged
• Heat Treatment: Q+T
• Model NO.: 1.2312, P20+S, 40CrMnMoS8-6
• Surface: Black
• Payment term: TT/LC
• Delivery Time: 15-20days
• Transport Package: Standard/Customized
• Specification: standard/customized
• Trademark: Baosteel
• Origin: China
• HS Code: 7225401000
• Production Capacity: 1000 Tons/ Month

Product Description

1.2312 P20+S Hot Rolled Plastic Mould Steel Plate

1.2312/P20+S steel is ideally suited for the production of moulds where improved machinability is required. Typical applications include die holders, zinc die casting dies, backers, bolsters and injection moulds. The versatility of this plastic mould tool steel with its high tensile characteristics enables uses for a variety of other applications such as shafts and wear strips.

1. The main performance
It has excellent hardening depth and good machinability, Delivery to pre hardened and tempered condition, Sulfur content is higher than 1.2311. Can impose nitriding processing (about 800HV), plating Nickel or chrome.

2. Application:
Mainly used for the degree of thefamily which do not require extreme large plastic moulds, Used as a low melting point of die holder , mould base, etc.

3. Grade

W.Nr	DIN	AFNOR	AISI/SAE	GB
1.2312	X40CrMnMoS8-6	(40CMD8S)	P20+S	4Cr2MnMo

4. Chemical composition (%)

C	Mn	Si	Cr	Mo	S	P
0.35-0.45	1.40-1.60	0.30-0.50	1.80-2.10	0.15-0.25	0.05-0.10	≤0.030

5. Phase transition temperature

Ac1	740°C
Ms	310°C

6. The hardness of delivery

Prehardened and tempered

HB278-325(950-1100N/mm²)

7. Heat treatment

Annealing	1)Heated to720-750°C,Two to four hours heat preservation, 2)Furnace cooling
Stress relief	1)Heated to560-650°C and then two to four hours heat preservation 2)Furnace cooling or air cooling
Pre hardened	1)Preheat to 600-650°C 2)Heated to hardening temperature 840-840°C and heat preservation 3)Oil cooling 4)Hardness:HRC51
Drawing temper	1)Immediately after quenching 2)When the 580-650°C,with the 1/inch to heat preservation

8. Delivery: For abundant stock, 15-20 days.For customized products, 30-50 days.

9. Packing: We provide standard export packing or according to customers' request.