Alloy structural steel 20CrMnTi

Alloy structural steel: 20CrMnTi
Standard: GB / T 3077-1988

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.