20MnCr5 Carburizing Steel

OTAI SPECIAL STEEL is 20MnCr5 | 1.7147 Carburizing steel, gearing steel stockholder and suppliers from china. more 16 years experience in DIN?20MnCr5 | 1.7147 steel supply

DIN?20MnCr5 | 1.7147 gearing steel is DIN?standard Alloy Carburizing ?gearing steel, GB 20MnCr5|1.7147 properties is a chromium, manganese, titanium alloy steel specification. 20MnCr5 | 1.7147 is equivalent with others standard Carburizing steel, gearing steel.

Related Specifications?ASTM A29/A29M DIN?EN 10083/3 JIS G4053 GB/T 3077-1988

Form of Supply

Din?20MnCr5 | steel 1.7147 gearing steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar and steel square block. DIN?20MnCr5 steel |1.7147?steel Round bar?can be sawn to your required lengths as one offs or multiple cut pieces. 20MnCr5 | 1.7147 gearing steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, provide a quality precision finished bar to tight tolerances.

Chemical composition

C(%) 0.17~0.22 Si(%) ≤0.40 Mn(%) 1.10~1.40 P(%) ≤0.035
S(%) ≤0.035 ?Cr(%) 1.00~1.30

Heat treatment Related

  • Annealing of 20MnCr5|1.7147 Alloy gearing steel

Slowly heated to 790-810 ℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace. Different annealing ways will get different hardness.The 20MnCr5|1.7147 gearing steel will get Hardness MAX 248 HB (Brinell hardness).

  • Quenching and temperature of 20MnCr5|1.7147 Alloy gearing steel

Heated slowly to 788°C, Then put in salt-bath furnace keep 1191 ℃to 1204 ℃。quenching by oil get 60 to 66 HRc hardness. High temperature tempering: 650-700℃,cool in air, get hardness 22 to 30HRC. Low temperature tempering: 150-200 ℃, Cool? in ari, get 61-66HRC hardness.

  • Hot work and cold work of 20MnCr5|1.7147 Alloy gearing steel

GB 20MnCr5|1.7147 steel can hot worked at 205 to 538°C, 20MnCr5|1.7147 gearing steel can be cold worked using conventional techniques in the annealed or normalized conditions.

Mechanical Properties

The mechanical properties of annealed GB 20MnCr5|1.7147 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


GB 20MnCr5 | 1.7147 steel is widely used for a variety of applications in the used to the gearings in rotating machinery. Typical applications such as valve bodies, pumps and fittings, the high load of 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.

Regular size and Tolerance

1) Hot Rolled round bar
Diameter Tolerance
Diameter Tolerance
≤12.70 -0.13 ~0.30 >50.80~63.5 -0.25~0.76
12.7~25.40 -0.13~0.41 >63.50~76.20 -0.25~1.02
>25.4~38.10 -0.15~0.51 >76.20~101.60 -0.30~+1.27
>38.1~50.80 -0.20~0.64 >101.60~203.20 -0.38~3.81
2) Hot Rolled steel plate
Thickness Tolerance
Thickness Tolerance
≤25.4 -0.41~0.79 >127~152 -1.60~2.39
>25.4~76 -0.79~1.19 >178~254 -1.98~3.18
>76~127 -1.19~1.60 >254~305 -2.39~3.96

Others 20MnCr5|1.7147 have not specified size, pls contact our?experienced sales team.


GB 20MnCr5 | 1.7147 ?gearing steel round bar and flat sections can be cut to your required sizes. 20MnCr5|1.7147 gearing steel ground bar can also be supplied, proviGBg a high quality tool steel precision ground tool steel bar to your required tolerances. GB 20MnCr5|1.7147 steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.

Contact our experienced sales team to help you with your 20MnCr5|1.7147 gearing steel questions and enquiry?by?Email or Telphone.?The questions will be reply in 24 hours.

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