D3/1.2080

D3 cold work steelhas very high wear resistance against abrasive and adhesive wear due to the high volume of hard carbides in the steel matrix, medium toughness, dimensionally stable, high compressive strength, not secondary hardenable.AISI D3 cold work steel, also know as DIN 1.2080 (Werkstoff) and JIS SKD1, is a 12% chrome alloy steel.

AISI D3 steel equivalen

Country	China	Japan	Germany	USA	UK
Standard	GB/T 1299	JIS G4404	DIN EN ISO4957	ASTM A681	BS 4659
Grade	Cr12	SKD1	1.2080/X210Cr12	D3

AISI D3 steel chemical composition

Grade	C		Mn		P	S	Si		Cr		V		T		Mo
D3	2.00	2.35	0.10	0.60	0.03	0.03	0.10	0.60	11.00	13.50	. . .	1.10	. . .	1.00	. . .	. . .
1.2080/X210Cr12	1.90	2.20	0.20	0.60			0.10	0.60	11.00	13.00	–	–	–	–	–	–
SKD1	1.90	2.20	0.20	0.60	0.03	0.03	0.10	0.60	11.00	13.00	–	–	–	–	–	–

Heat treatment

Heat Treatment Process	Temperature Range	Holding Time	Cooling Method	Maximum Hardness
Isothermal Annealing	Heat to 800°C	1/2 h to 1 h	Furnace cooling to 670°C and hold at temperature for at least 10 hours;Cool by 10°C/h to 630°C;Cooling in air	≤240 HB
Stress Relieving	Heat to 600-650°C	4-6 hours	Cooling in furnace to 300-350°C; Cooling in air	N/A
Hardening	Initial preheating to 350-450°C; Second preheating to 650-750°C; Heat to hardening temperature 860-890°C and hold at temperature	N/A	Cooling in hot oil (40-60°C)	54-59 HRC
Tempering	Within one hour from hardening(warm part) in the range 550-630°C for 4-6 hours according to hardness required, the dimensions of the parts and operating conditions	N/A	Air Cooling	N/A

Typical Application Examples

Mainly used as a silicon steel sheet punching die, used for high wear resistance, simple shape of the stretching and punching die under the condition of small dynamic load.

used in the manufacturing of bending die requirements of high wear resistance, complex shape of the punch, die, insert, punch, die recommendations, hardness 60 ~ 64HCR.

Used for the manufacture of drawdie wear resistant die, recommended hardness 62 ~ 64HCR.

When used for punch of cold extrusion die of aluminum parts, the recommended hardness is 60 ~ 62HCR.

Used for bending elastic steel plate with carbon content of 0.65% ~ 0.80%, hardness of 60 ~ 62HRC.

Can be used for blanking die, punch, roller, scissors, cold pier die, clay die.

Can be used for thermosetting plastic molding die.