Description
20CrMnTi gear steel is GB standard Alloy Carburizing Gearing steel, GB 20CrMnTi properties is a chromium, manganese, titanium alloy steel specification.
20CrMnTi alloy steel chemical composition:
| C | Si | Mn | S | P | Cr | Ni | Ti | Cu |
| 0.17-0.23 | 0.17-0.37 | 0.80-1.10 | ≤0.035 | ≤0.035 | 1.00-1.30 | ≤0.030 | 0.04-0.10 | ≤0.030 |
20CrMnTi Heat treatment
- Annealing of 20CrMnTi 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 20CrMnTi Gearing steel will get Hardness MAX 248 HB （Brinell hardness）.
- Quenching and temperature of 20CrMnTi gear 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 20CrMnTi Alloy Gearing steel
GB 20CrMnTi steel can hot worked at 205 to 538°C, 20CrMnTi Bearing/Gearing steel can be cold worked using conventional techniques in the annealed or normalized conditions.
Mechanical Properties
The mechanical properties of annealed GB 20CrMnTi 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 20CrMnTi steel is widely used for a variety of applications in the used to the bearing/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.
E Steel Sdn Bhd are Malaysia steel supplier/stockist providing raw materials to the wide arrays of engineering industries/sectors.
We supply full range of Carbon Steel sheets, Carbon steel round bar , Carbon steel rod, Carbon steel plate, Alloy steel , hardened steel , Case Hardened Steel ,Special Steel ,Tool Steel ,Case harden Steel
Grades : ASTM a105, s45c , s50c, AISI4140, AISI4340, AISI4130, 5919, 6587,
