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

 

Alloy structural steel 20CrMnTi mechanical properties:

Tensile strength σb (MPa): ≥ 1080 (110)

Yield strength σs (MPa): ≥ 835 (85)

Elongation δ5 (%): ≥ 10

Reduction of ψ (%): ≥ 45

Impact energy Akv (J): ≥ 55

Impact toughness αkv (J/cm2): ≥ 69 (7)

Hardness: ≤ 217HB

Sample size: Sample size is 15mm rough

 

Heat treatment and microstructure specifications:

Heat treatment specifications: quenching: first time 880 ℃, the second time 870 ℃, oil cooling; tempering 200 ℃, water-cooled, air-cooled.

Delivery status: to heat treatment (normalizing, annealing or tempering) or without heat treatment delivery, the delivery status should be specified in the contract.

Alloy structural steel 20CrMnTi Features and Scope: Good performance carburizing steel, high hardenability, after carburizing with a hard, wear-resistant surface and tough core part, with high and low temperature impact toughness, weldability medium, after normalizing machinability good. For the manufacture of sectional < 30mm to withstand high-speed, medium or heavy load, impact and friction of the important parts, such as gears, ring gear, gear shaft crosshead.