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.
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- Round
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- sheet
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- Square
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- Plate
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 |
Applications
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 (mm) |
Diameter Tolerance (mm) |
Diameter (mm) |
Diameter Tolerance (mm) |
| ≤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 (mm) |
Thickness Tolerance (mm) |
Thickness (mm) |
Thickness Tolerance (mm) |
| ≤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.
