1.2888

We could produce 1.2888 Forged forging Tool Die Steel Round Bars Rods Square rectangular rectangle Flat Bars Shafts,1.2888 Forged Forging tool die Steel Hollow Bars Forged Forging Sleeves Bushes Bushing Pipes Piping tubes tubings barrels Casing Cases Shells cylinders hubs housings,1.2888 Forged Forging Steel Rings Seamless Rolled Rings,1.2888 Forged Forging Steel Blocks Discs Disks Plates,1.2888 Forged Forging Copper Extrusion Presses Extrusion Container Inner Liners Intermediate Liners Extrusion Liners copper Extrusion tools,1.2888 Brass extrusion dies die casting tools,1.2888 goosenecks and chambers for magnesium die casting and other 1.2888 forged forging parts forged forging pieces forged forging steel components products material as per the requirement

Chemical Composition of 1.2888 ( in weight %)

 

C	Si	Mn	Cr	W	Others
0.20	0.25	0.50	9.50	5.50	Co: 10.0

 

 

Description of 1.2888

Special high alloy hot work steel. Extreme retention of hardness, suitable for all applications where particular resistance to high temperature wear and melt of metal is required.

Applications of 1.2888

Extrusion tools for copper, copper alloys and steel, including special dies, die casting tools of all kind for brass, goosenecks and chambers for magnesium die casting, extrusion tools for steel. Nop water cooling.

Physical properties (average values) at ambient temperature of 1.2888

Modulus of elasticity [103 x N/mm2]: 215

Density [g/cm3]: 8.08

Soft Annealing of 1.2888

Heat to 760-840¡æ, cool slowly in furnace. Time is 4-6 hours. This will produce a maximum Brinell hardness of 320.

Stress Relieving of 1.2888

Stress relieving to remove machining stresses should be carried out by heating to 600-650¡æ, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening of 1.2888

 

Harden from a temperature of 1100-1150¡æ followed by air, oil quenching or vacuum quenching. Hardness after quenching is about 52 HRC.

Coefficient of Linear Thermal Expansion 10-6¡æ-1

 

20-100¡æ	20-200¡æ	20-300¡æ	20-400¡æ	20-500¡æ	20-600¡æ	20-700¡æ
12.1	12.1	12.4	12.9	13.5	14.0	14.1

 

Soft Annealing of 1.2888

Heat to 800-840¡æ, cool slowly in furnace. This will produce a maximum Brinell hardness of 250.

 

Stress Relieving of 1.2888

Stress relieving to remove machining stresses should be carried out by heating to 650¡æ, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening of 1.2888

Harden from a temperature of 1020-1060¡æ followed by oil, air or warm bath quenching. Hardness after quenching is 49-53 HRC.

Tempering of 1.2888

 

Tempering temperature: 600-750¡æ, to increase hardness, temper 2 or 3 times.

 

Tempering Temperature (¡æ) vs. Hardness (HRC)

500¡æ	550¡æ	6000¡æ	650¡æ	700¡æ	750¡æ
56	56	55.5	54	48	42.3

 

Forging of 1.2888

Hot forming temperature: 1100-900¡æ.