GB/T 1299 Ni25Cr15Ti2MoMn Introduce

GB/T 1299 Ni25Cr15Ti2MoMn steel is an alloy of iron and carbon, with production and use stretching back thousands of years. Steel can also contain other elements such as silicon and manganese, as well as trace elements such as cobalt and chromium. When it comes to commercial steel, however, one of the most commonly used and specified grades is GB/T 1299 Ni25Cr15Ti2MoMn steel.

Smelting temperature:1875°C - 1397°C

Application:Alloy tool steel

GB/T 1299 Ni25Cr15Ti2MoMn Material Chemical Composition

The chemical composition of the GB/T 1299 Ni25Cr15Ti2MoMn steel are as follows:

ElementMinMax
Boron (B)-0.0060
Titanium (Ti)0.65001.1500
Cobalt (Co)-1.0000
(Nb+Ta)4.75005.5000
Aluminum (Al)0.20000.8000
Nickel (Ni)50.000055.0000
Molybdenum (Mo)2.80003.3000
Chromium (Cr)17.000021.0000
Sulfur (S)-0.0150
PhOsphorus (P)-0.0150
Manganese (Mn)-0.3500
Silicon (Si)-0.3500
Carbon (C)-0.0800

GB/T 1299 Ni25Cr15Ti2MoMn Material Mechanical Properties

GB/T 1299 Ni25Cr15Ti2MoMn steel is used in almost every branch of industry due to its unique combination of mechanical and physical properties. GB/T 1299 Ni25Cr15Ti2MoMn Grade steel is one such variety that is used particularly in the construction industry. It has excellent mechanical properties, such as high strength and ductility, and can be used in a wide variety of applications.

The mechanical properties of the GB/T 1299 Ni25Cr15Ti2MoMn steel are as follows:

YieldRp0.2 ≤ 931 (MPa)
TeileRm≤ 196 (MPa)
ImpactKV/Ku42(J)
ElongationA32%
Reduction in cross section on fractureZ14%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)332

GB/T 1299 Ni25Cr15Ti2MoMn Material Thermal Properties

The thermal performance parameters of the GB/T 1299 Ni25Cr15Ti2MoMn steel are as follows:

Temperature (°C)44148456
Modulus of elasticity (GPa)-553-
Mean coefficient of thermal expaion ×10-6/(°C)--33
Thermal conductivity (W/m·°C)-32.312.2
Specific thermal capacity (J/kg·°C)-313-
Specific electrical resistivity (Ω mm²/m)0.32--
Deity (kg/dm³)--223
Poisson’s coefficient, ν--342