20CrMo alloy steel bar

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11-May-2024

is one of our main products, and it has the high hardenability , temper brittleness , very good weldability , can be a good machinability and cold plastic strain. More informational about , please see the following:

description:
Standard: GB / T 3077-1988, JIS, AISI, ASTM, GB, DIN, EN
Material: 201,202,304,304L,316,316L,321,310S,410,410S,430,347H,2Cr13,etc
Length: 3000mm-6000mm or as customer's requirement
Surface: Black/Bright/Polished
Technique: Hot rolled/Cold drawn/Forge

20CrMo alloy chemical composition:

C	Si	Mn	S	P	Cr	Ni	Cu	Mo
0.17～0.24	0.17～0.37	0.40～0.70	≤0.035	≤0.035	0.80～1.10	≤0.030	≤0.030	0.15～0.25

20CrMo alloy steel mechanical properties:
Tensile strength σb (MPa): ≥ 885 (90) Yield strength σs (MPa): ≥ 685 (70)
Elongation δ5 (%): ≥ 12 Reduction of area ψ (%): ≥ 50
Impact energy Akv (J): ≥ 78 Impact toughness values αkv (J/cm2): ≥ 98 (10)
Hardness : ≤ 197HB Sample size: Sample size is 15mm rough

Heat treatment and microstructure specifications : Heat treatment specifications: quenching 880 ℃, water, oil cooling ; tempering 500 ℃, water, oil cooling .

20CrMo heat treatment : 20CrMo material belonging to a low-carbon alloy steel for carburizing ; treatment specifications : quenching 880 ℃, water, oil cooling ; tempering 500 ℃, water, oil cooling .

20CrMo alloy characteristics and scope of application: high hardenability , temper brittleness , very good weldability , cold cracking tendency to form small, can be a good machinability and cold plastic strain . Usually in the quenched state or carburizing used for the manufacture of infiltration in non-corrosive media and working temperatures below 250 ℃, pressure pipe and various fasteners containing nitrogen and hydrogen mixture of media work , more advanced carbon parts, such as gears , shafts , etc.