What is DIN 1.2311 steel?

DIN 1.2312 steel is a high quality plastic mold steel material.

1. Supply Range of 1.2312 Material

Round Bar: diameter 20mm – 500mm Steel Plate and Steel Block: thickness 12-300mm x width 200-2300mm (*20-120mm plate in stock in prehardened condition) Surface Finish: Black Surface, Roughly Machined, Peeled & Turned or as per given requirements.

2. Relevant DIN 1.2312 Steel Specification and Equivalent Steel Grades

Country	German	USA
Standard	DIN EN ISO 4957	ASTM/AISI
Grades	1.2312	P20+S

3. DIN 1.2312 Material Chemical Composition and Equivalent

DIN ISO 4957	C		Mn		P	S	Si		Cr		Mo
1.2312	0.35	0.45	1.30	1.60	0.03	0.05-0.1	0.20	0.40	1.80	2.10	0.15	0.25
ASTM A681	C		Mn		P	S	Si		Cr		T
P20+S	0.28	0.40	0.60	1.00	0.03	0.03	0.20	0.80	1.40	2.00	0.30	0.55

4. DIN 1.2312 Plastic Mold Steel Properties

• Density: 7.84 g/cm³
• Linear expansion coefficient: 12.4 *10^-6m/(m*K)
• Thermal conductivity: 34 W/(m*K)
• Hardness (in soft annealed condition): < 235 HB
• Hardness (in hardened and tempered condition): < 51 HRC

5. Forging of 2312

Hot forming temperature:  1100-850 °C.

6. Heat Treatment of Plastic Mold Steel 1.2312

• Grade: 40CrMnMoS8-6
• Material No. W-Nr.: 1.2312
• Hot working temperature / C: 1050 ~ 850
• Annealing temperature / C: 780 ~ 760
• After annealing, the hardness is less than or equal to 230 HBS
• Quenching temperature / C: 830 ~ 870
• Cooling medium: Oil
• Common tempering temperature / C: 640 ~ 680
• Hardness after tempering HRC|100 C: 51
• Hardness after tempering HRC|200 C: 50
• Hardness after tempering HRC|300 C: 48
• Hardness after tempering HRC|400 C: 45

7. Applications of 1.2312 Materials

DIN 1.2312 is good for plastic injection moulds for thermoplastics, extrusion dies for thermoplastic, compression molds application. Tools for plastics processing and moulds for pressure die casting. Contact us for further information or the best cost or price of your request.