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[China]
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Address: No.101 Shijing East Road, Tudian Town, Tongxiang, China
Contact name:Denny
NEW-ERA STEEL TUBE TECHNOLOGY CO.,LTD |
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Products Description:
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 DIN DIN/T DIN17210
Heat treatment Related
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 16MnCr5|1.7131 gearing steel will get Hardness MAX 248 HB (Brinell hardness).
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.
DIN 20MnCr5 gear 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.
Applications
DIN 16MnCr5|1.7131 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.
Chemical compostions:
| Steel Grade | C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) |
| 16MnCr5/1.7131 | 0.14～0.19 | ≤0.40 | 1.00～1.30 | ≤0.035 | ≤0.035 | 0.80～1.10 |
| 20MnCr5/1.7147 | 0.17～0.22 | ≤0.40 | 1.10～1.40 | ≤0.035 | ≤0.035 | 1.00～1.30 |
| Cold drawn and Cold rolled bearing tubes tolerance control level | |||
| Outer Diameter | Diameter Tolerance | Outer Diameter | Diameter Tolerance |
| (mm) | (mm) | (mm) | (mm) |
| ≤12.70 | ±0.08 | >50.80～63.5 | ±0.25 |
| 12.7～25.40 | ±0.10 | >63.50～76.20 | ±0.30 |
| >25.4～38.10 | ±0.15 | >76.20～101.60 | ±0.40 |
| >38.1～50.80 | ±0.20 | >101.60～203.20 | ±0.50 |
| Remark:Tolrance on outer diameter and Inner diameter,wall thickness can be specified by customer requested, | |||
Delivery Condition: +C, +LC, +SR, +A, +N
Production Size Range:
OD: 10-210mm
WT: 2-30mm
Length: 2-5.8m
Bearing and Gearing Steel Tube Characteristic:
High strength
High-precision
Good Surface Quality
Stable quality
Smooth Roughness
Production Processs:
Seamless Cold Drawn or Seamless Cold Rolled + Heat Treatment or Stress released control
