1,ASTM 4340 Alloy Steel Flat Bar
2,Thickness:10~90mm
3,Width:60~610mm
4,Length:4m~6m
5,ISO9001 2000
Sichuan Liaofu Special Steel Trading Co., Ltd.
alloy structural steel
AISI 4340/GB 40CrNi2Mo
Dimensions:
Flat steel: thickness:10mm~90mm; width: 60mm~610mm;
length: 4~6m, or at the customers' requirements
Sichuan Liaofu Special Steel Trading Co., Ltd.
Alloy strctural steel
1, Grade: AISI 4340/GB 40CrNi2Mo2, Chemical composition
| C | Si | Mn | Cr | Mo | Ni | Cu |
| 0.37~0.45 | 0.15~0.35 | 0.50~0.80 | 0.60~0.90 | 0.15~0.25 | 1.25~1.65 | ≤0.025 |
3.Payment term: .L/C or T/T with 30% deposit
4.Trade term: FOB
5, Delivery time : within a month
6, Port: Dalian
7,MOQ:1 MT
Mechanical Properties:
Tensile Strength: σb (MPa): ≥980(100)
Yield Strength: σs (MPa): ≥835(85)
Elongation: δ5 (%): ≥12
Reduction of area: ψ (%): ≥55
Akv (J): ≥78
Impact Toughness αkv (J/cm2): ≥98(10)
Hardness: ≤269HB
Characters:
1, tensile steel round bar
2, high strength
3, high toughness
Application: used for making structural components of high strength such as aircraft engine ,cross beam,undercarrige,pressure vessel,rocket hull,heavy-load torsion shaft,etc.
