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Relevant Steel Specification for 1.2083 Stainless Steel

ISO EN 4957	ASTM A681
1.2083 / X40Cr14	420

3. DIN 1.2083 Steels Chemical Composition 

DIN ISO 4957	C		Mn	P	S	Si	Cr
1.2083 / X40Cr14	0.36	0.42	max 1.0	0.03	0.03	max 1.0	12.50	14.50
ASTM / AISI A276	C		Mn	P	S	Si	Cr
420	0.15	–	max 1.0	0.04	0.03	max 1.0	12.00	14.00

4. Steel 1.2083 Steel Properties Modulus of elasticity [103 x N/mm2]: 220 Density [g/cm3]: 7.80 Specific heat capacity[J/g.K]: 0.46

5. Forging of 1.2083 Stainless Steel

• Hot forming temperature: 1050-850oC.

6. Heat Treatment

• Soft Annealing

Heat to 760-800oC, cool in furnace slowly.

• Stress-relieving

After rough machining the steel should be heated through to 650°C, holding time 2 hours. Cool to 500°C slowly, then freely in air.

• Hardening

Preheating temperature: 600–850°C. Harden from a temperature of 1000-1050oC followed by oil, vacuum, pressure gas (N2), air or hot bath ar 500-550 C quenching. Protect the part against decarburization and oxidation during hardening. Soaking time: 1020°C, 30 minutes, 1050°C, 30 minutes. Soaking time = time at hardening temperature after the tool is fully heated through.

• Tempering

Tempering temperature: 250-570oC.

7. Applications of 1.2083 Steel It’s usually used for plastic mould plates and inserts for working with chemically aggressive plastics; because of excellent polishing, it is also suitable for optical and medical products.