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Grade Introduction:

16MnCr5 steel is alloyed case hardening engineering steels for parts that require core tensile strength of 800 – 1100 N/mm² and good wearing resistance. It is an engineering material typically used to manufacture piston bolts, camshafts, levers, and other vehicle and mechanical engineering components. 16MNCR5 Grade is also available in different shapes like Round, Flat, Square steel Bars.

Grade Application:

DIN 16MnCr5|1.7131 steel is widely used for a variety of applications in the used to gearings in rotating machinery. Typical applications such as valve bodies, pumps, and fittings, the high load of the wheel, bolts, double-headed bolts, gears, internal combustion engine. Electric locomotives, machine tools, tractors, steel rolling equipment, boring machine, railway vehicle, and mining machinery transmission shaft on the steel ball, roller and shaft sleeve, etc.

Equivalent grades:

DIN EN 10083/3
JIS G4053

Addition to other grades:

MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, M2, M35, M42, 2714, SKD-11, P20, P20+S, P20+Ni, SCM 420, ASTM SA-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, OHNS, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE 52100, S40C, S355J2G3.

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Chemical composition:

The following table shows the chemical composition of 16MNCR5 steel:

Element C Si Mn P S Cr
Content (%) 0.14~0.19 ≤0.40 1.00~1.30 ≤0.035 ≤0.035 0.80~1.10

Mechanical Properties:

The mechanical properties of annealed DIN 16MnCr5/1.7131 gearing steel (typical for steel) are outlined in the table below:

Tensile Yield Bulk modulus Shear modulus Poisson’s ratio Thermal conductivity
MPa Mpa Gpa Gpa W/mK
520 415 Min 140 80 0.27-0.30 46.6


Brinell hardness in the condition
+S max. +A max. +TH +FP
min. max. min. max.
* 207 156 207 140 187

Heat Treatment:

When hardening 16MnCr5 heat treatment temperatures, including the rate of heating, cooling, and soaking times will vary due to factors such as the shape and size of each steel component. Other considerations during heat treatment include the type of furnace, quenching medium, and workpiece transfer facilities. Please consult a heat treatment specialist for full guidance on heat treatment of 16MNCr5 steel.


Harden from a temperature of 860-980°C followed by water, oil, or thermal bath quenching.


Tempering temperature: 150-200°C.

Physical Properties

Quantity Value Unit
Thermal expansion 10 – 10 e-6/K
Thermal conductivity 25 – 25 W/m.K
Specific heat 460 – 460 J/kg.K
Melting temperature 1450 – 1510 °C
Density 7700 – 7700 kg/m3
Resistivity 0.55 – 0.55 Ohm.mm2/m

Thermal Properties

Quantity Value Unit
Thermal expansion 10 – 10 e-6/K
Thermal conductivity 25 – 25 W/m.K

Forging Properties:

Hot forming temperature: 1100-850°C.

Stress Relieving:



Temperature: 850-880°C.


Heat to 650-700°C, cool slowly.




It has a good Machinability at the Soft-annealed Condition.


While this steel grade has satisfactory weldability, there is a possibility of cracks forming along welds.

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