GB/T 1299 3Cr2MnNiMo Alloy Die Plate

GB/T 1299 3Cr2MnNiMo steel is widely used in the world of the pre hardened plastic die steel, the comprehensive mechanical performance is good, high hardenability, can make the big cross section steel after tempering process to form a uniform hardness distribution, has the very good polishing performance and low surface roughness. Made of the steel mold, a conditioning treatment in the first, pre hardened to 28 ~ 35 HRC hardness, directly into the mold again, so not only ensure the use of large or super large mold performance, and avoid the deformation of mold caused by heat treatment.

GB/T 1299 3Cr2MnNiMo Steel Chemical Compositions(%):

GB/T 1299 3Cr2MnNiMo Steel Mechanical Properties:
Maximum temperature Point (approximation) : Ac1 = 715 ° C, Ac3 = 770 ° C, Ms = 230 ℃
Density: 7.8 g/cm3.
Linear expansion coefficient (20 ~ 200 ° C) : 12.7 x 10-6 k - 1.
Constant pressure heat capacity (20 ° C) : 460 - j/(kg • K).
Elasticity modulus: 20 ° C to 205000 mpa, 200 ° C to 200200 mpa.
Thermal conductivity: 29.0 W/(m • K) , when at 20 ° C ; 
29.5 W/(m • K) , when at 200 °C.

GB/T 1299 3Cr2MnNiMo steel hot working specification: heating temperature of 1140 ~ 1180 ° C, beginning temperature of 1050 ~ 1140 ° C, terminate or a temperature of 850 ° C, slow cooling.

GB/T 1299 3Cr2MnNiMo steel high temperature tempering specification: tempering temperature (700 +) 10 ° C, insulation 4 h, the oven to 500 ° C or less cold, empty out cold.

Isothermal annealing annealing temperature (850 +) 10 ° C, 2 h heat preservation, along with the furnace cooled to 700 + 10 ° C, insulation 4 h, furnace cooling to 500 ° C or less, from air cooling.

Quenching and tempering specification: quenching temperature 340 ~ 860 ° C, oil cooling or air cooling, or 50 HRC hardness; Tempering temperature 550 ~ 650 ° C, air cooling, 30 ~ 38 HRC hardness.

Katalor is the professional Chinese GB/T 1299 3Cr2MnNiMo alloy die plate supplier .If you need 3Cr2MnNiMo alloy die plate, we can put the 3Cr2MnNiMo alloy die plate order to our steel mill directly or collect these goods from our stock directly if we have enough ex-stock .Besides. if you need any offer or if you want to know the price and any other information about 3Cr2MnNiMo alloy die plate price, please be free to contact us.