1.2379 X153crmov12 Tool Steel
1.2379 X153crmov12 Tool Steel

1.2379 X153crmov12 Tool Steel

1.2379 Forged Tool Steel Bar is frequently used in cold work applications requiring toughness at relatively high hardness.
Equivalent Grade:AISI D2/JIS SKD11/GB Cr12Mo1V1/1.2379/X153CrMoV12
Hardness select 60-65HRC.
Ferrous metal die, hardness select 40-50HRC.

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Product Introduction

Material 1.2379 X153CrMoV12 is a versatile high-carbon, high-chromium, air-hardening tool steel that is characterized by a relatively high attainable hardness and numerous, large, chromium-rich alloy carbides in the microstructure. These carbides provide good resistance to wear from sliding contact with other metals and abrasive materials. Although other steels with improved toughness or improved wear resistance are available, 1.2379 steel provides an effective combination of wear resistance and toughness, tool performance, price, and a wide variety of product forms.The remelting process provides improved chemical homogeneity, refinement of carbide size, and the associated improvements in mechanical and fatigue properties.

Size Range for 1.2379 Tool Steel
Round Bar: diameter 20mm~850mm
Flat Bar/Plate: Thickness 2mm~650mm x width 100mm~800mm

1.2379 Tool Steel Equivalent Grades

Country	USA	German		Japan	China
Standard	ASTM A681	W-nr.	DIN	JISG4404	GB/T1299-2000
Grades	D2	1.2379	X155CrVMo12-1	SKD11	Cr12Mo1V1

1.2379 Steel Data Sheet

Grades	C%	Si%	Mn%	P%	S%	Cr%	Mo%	V%
1.2379/X155CrVMo121	1.50~1.60	0.10~0.40	0.15~0.45	≤0.03	≤0.03	11.0~12.0	0.60~0.80	0.90~1.10

Physical Properties
1.2379 x153crmov12 steel physical properties are listed in the tables below.

Critical point	A_c1	A_cm	A_rcm	A_r1	M_s
Temp.(approximation)	1490°F (810°C)	1607°F (875°C)	1382°F (750°C)	1283°F (695°C)	374°F (190°C)

Coefficient of linear thermal expansion

Temperature	68~212°F (20~100°C)	68~392°F (20~200°C)	68~572°F (20~300°C)	68~752°F (20~400°C)
Coefficient	10.5 x10^-6	11.5 x10^-6	11.9 x10^-6	12.2 x10^-6

Forging of 1.2379 Tool Steel

Items	Heating temperature	Starting forging temperature	Final forging temperature	Cooling
Ingot	2048~2120°F (1120~1160°C)	1922~1994°F (1050~1090°C)	≥1562°F(850°C)	Hot charging annealing
Billet	2048~2084°F (1120~1140°C)	1922~1958°F (1050~1070°C)	≥1562°F(850°C)	Hot charging annealing,cooling in hole or dust

1.2379 Forged Tool Steel Flat Bar Produce Process

Electric-Furnace Smelting(EF)→Ladle Furnace(LF)→Vacuum Degassing(VD)→ Argon protected ingot →Multidirectional Forging → (Concave forging →)Normalizing+Hydrogen Diffusion Annealing → Ultrasonic Flaw Detection →Queching+Tempering Prehardened High Mold Steel Material 1.2581 Tool and Die Steel Mould Steel H21 SKD5 Round Bar Steel

Product Picture

1.2379 X153CrMoV12

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Steel Making

Ingot Production

Forged Bars

Machinary

Heat treatment

Soft Annealing

Protect the steel and heat through to 1560°F (850°C). Then cool in the furnace at 20°F (10°C) per hour to 1200°F (650°C), then freely in air.

Stress relieving

After rough machining the tool should be heated through to 1200°F (650°C), holding time 2 hours. Cool slowly to 930°F (500°C), then freely in air.

Hardenging

Preheating temperature: 1110-1290°F (650-750°C). Austenitizing temperature: 1810-1920°F (990- 1050°C), but usually 1830-1905°F (1000-1040°C).

Temperature		Soaking time (min)	Hardness before tempering
°F	°C	Soaking time (min)	Hardness before tempering
1815	990	60	approx. 63 HRC
1850	1010	45	approx. 64 HRC
1885	1030	30	approx. 65 HRC

* Soaking time = time at hardening temperature after the tool is fully heated through.
Protect the part against decarburization and oxidation during hardening.

Quenching

Air or pressurized gas to 150-125ºF (66-51ºC). Sizes up to 4 inches (101.6 mm) in thickness will through harden when air cooled from 1575ºF (857ºC). Sizes up to 6 inches (152.4 mm) in thickness will through harden when air cooled from 1625ºF (885ºC).

Tempering

Temper immediately after quenching. Hold at temperature for 1 hour per inch (25.4 mm) of thickness, 2 hours minimum, then air cool to ambient temperature. The typical tempering range is 350 to 400ºF (177 to 204ºC).
For maximum wear resistance, temper between 300-350°F (149-177°C) for a hardness of 62-64 HRC. For the optimal balance between wear resistance and toughness, temper between 500-550°F (260-288°C). This will produce 58-60 HRC.
For maximum toughness, double temper, 2 hours plus 2 hours, at temperatures above 950°F (510°C). This will produce hardness of less than 58 HRC.

Applications
Typical applications for 1.2379 X153CrMoV12 tool steel are blanking, forming, and trim dies, gages, slitting cutters, wear parts, lamination dies, thread rolling dies, drawing dies, rotary cutting dies, knurls, bending dies, gages, shear blades, burnishing tools, rolls, machine parts, master parts, injection screw and tip components, seaming rolls, extrusion dies, tire shredders, scrap choppers, etc.

Delivery Condition:

Rough Machined Round Bar/Milling Plate; Peeling Bright; Black or as your requiremt.
Annealing,ESR material.

Delivery

1.2379 material

Packing & Delivery

Port:Any Chinese Port

The inner size of container is below:

-- 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)

-- 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high

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