Alloy Steel AISI 4340 34CrNiMo6 1.6511

Product Description

***0 Alloy Steel
OTAI SPECIAL STEEL is ASTM ***0 Alloy steel stockholders and suppliers from china. we have more *6 years experience in ***0 steel round bar, plate, steel flat bar, square supply.
***0 Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon, Oil Quenched & Tempered Hardenss is ****4 HRc.***0 Annealing delivery hardenss less than **0HB.
***0 steel properties is very similar with GB *0CrNiMo steel, JIS SNCM**9 and DIN 1.***1 *6CrNiMo4 Alloy structural steel. At most work environment,***0 is equivalent with *0CrNiMo, 1.***1 *6CrNiMo4, SNCM**9 steel.
Related Specifications ASTM A*9/A*9M ASTM AISI SAE ***0 UNS G****0 DIN EN ****3/3 JIS G***3 GB/T ***7
***0 steel PDF Data Down
1.Form of Supply
ASTM aisi ***0 Alloy structural steel, we can supply the ***0 round bar, steel flat bar, plate, hexagonal steel bar and steel square block. ***0 steel Round bar can be sawn to your required lengths as one offs or multiple cut pieces. ***0 Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.
Round
sheet
Plate
Square
Hexagonal
Pipe

2.***0 Alloy Steel Supply Range
AISI ***0 Steel Round Bar:  Diameter 5mm - ***0mm x Length ****0mm Max
SAE ***0 Steel Plate:     Thickness *0mm - ***0mm x Width **0mm****0mm X Length
ASTM ***0 Steel Flat Bar:  5mm***0mm x 5mm***0mm x Length
We can make the biggest Steel product **0 tons a piece.
3.Chemical composition
Element ⇔ Content (%)
♦Iron, Fe ⇔*5.**5 - *6.*3
◊Nickel, Ni ⇔ 1.*5 - 2.*0
♦Chromium, Cr ⇔0.**0 - 0.**0
◊Manganese, Mn ⇔0.**0 - 0.**0
♦Carbon, C ⇔ 0.**0 - 0.**0
◊Molybdenum, Mo ⇔ 0.**0 - 0.**0
♦Silicon, Si ⇔ 0.**0 - 0.**0
◊Sulfur, S ⇔ 0.***0
♦Phosphorous, P ⇔ 0.***0
4.Applications
ASTM ***0 steel is a alloy structural steel, ***0 is used for engineering structural, Used as require good toughness, high strength, as well as the important conditioning of large size, heavy machinery such as high load of axial, turbine shaft, larger than **0 mm in diameter of helicopter rotor shaft, turbojet engine turbine shaft, blade, high load of transmission parts, fasteners of the crankshaft. Gear, etc.; Can also be used for operating temperature over **0 ºC of rotor shaft and blade, etc.; And after nitriding processing can also be used to make special performance requirements of the important parts, after low temperature tempering or can be used for ultra-high strength steel after isothermal quenching
5.Regular size and Tolerance

1) Hot Rolled round bar
Diameter (mm)	Diameter Tolerance (mm)	Diameter (mm)	Diameter Tolerance (mm)
≤*2.*0	*0.*3 ~0.*0	>*0.*0~*3.5	*0.*5~0.*6
*2.7~*5.*0	*0.*3~0.*1	>*3.*0~*6.*0	*0.*5~1.*2
>*5.4~*8.*0	*0.*5~0.*1	>*6.*0~**1.*0	*0.*0~*1.*7
>*8.1~*0.*0	*0.*0~0.*4	>**1.*0~**3.*0	*0.*8~3.*1
2) Hot Rolled steel plate
Thickness (mm)	Thickness Tolerance (mm)	Thickness (mm)	Thickness Tolerance (mm)
≤*5.4	*0.*1~0.*9	>**7~**2	*1.*0~2.*9
>*5.4~*6	*0.*9~1.*9	>**8~**4	*1.*8~3.*8
>*6~**7	*1.*9~1.*0	>**4~**5	*2.*9~3.*6

Others ***0 have not specified size, pls contact our experienced sales team.
6.Machinability
AISI ***0 alloy steel can be machined using all conventional techniques. Machining process can be performed in the annealed or normalized and tempered conditions.
7.Forming
AISI ***0 alloy steel has good ductility and formability in the annealed condition. It can be bent or formed by pressing or spinning in the annealed state.
8.Welding
AISI ***0 alloy steel can be welded using fusion or resistance welding methods. Preheat and post heat weld procedures are followed while welding this steel by established methods.
9.Forging
AISI ***0 alloy steel is forged at **7 to ***3°C (***0 to ***0°F).
*0.Cold Working
AISI ***0 alloy steel can be cold worked using all conventional methods in the annealed condition. It has high ductility.
*1.Annealing
AISI ***0 alloy steel is annealed at **4°C (***0°F) followed by cooling the furnace.
*2.Tempering
AISI ***0 alloy steel should be in the heat treated or normalized and heat treated condition before tempering. Tempering temperatures depend upon the desired strength level.
*3.Hardening
AISI ***0 alloy steel can be hardened by cold working or heat treatment.
*4.Processing
SAE ***0 tool steel round bar and flat sections can be cut to your required sizes. AISI ***0 tool steel ground bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. ASTM ***0 steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.

Country:	China
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