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18Cr2Ni4WA SNC815 Alloy steel

Prouduct name: 18Cr2Ni4WA SNC815 Alloy steel

abstract: 18Cr2Ni4WA SNC815 Alloy steel

Popular in these Categories: Alloy Steel

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18Cr2Ni4WA SNC815 Alloy steel
MATERIAL STANDARDS: GB/T3077,JIS G4053
CHEMICAL COMPOSITION (WEIGHT %)
C (%):    0.12 ~ 0.18
Si (%):    0.15 ~ 0.35
Mn (%):  0.35 ~ 0.65
P (%)≤:  0.030
S (%)≤:  0.030
Cr (%):   0.60 ~ 1.00
Ni (%):    3.00 ~ 3.50
Mo (%):  -
Cu (%):   ≤ 0.30
HEAT TREATMENT & MECHANICAL PROPERTIES
Quenched 830 ~ 880℃, oil cooled 
Tempered 150 ~ 200, air cooled 
Mechanical property ≥ σb/MPa: 980
Mechanical property ≥ σs/MPa: -
Mechanical property ≥ δ5 (%): 12
Mechanical property ≥ ψ (%): 45
Mechanical property ≥ Akv J/cm2): 78
Hardness / COND QT.HB: 285 ~ 388
MAIN FEATURES AND MELTING PROCESS
The steels shall be manufactured by melting process EF, LF + EAF+ VD, IFF + ESR Melted. VIM + ESR can be handled by agreement.
Forgings may be furnished in one of the following conditions: stress relieving; annealing; solution treatment; solution treatment and ageing; normalizing; normalizing and tempering; or quenching and tempering.
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Power generation – turbine fasteners – boiler support rods
Process plant – fasteners
Mechanical gears, gear shaft, main axis, valve rods
Mechanical parts - connecting rods, bolts and nuts
Multidiameter shafts

PRODUCT PROFILE AND SUPPLYING FORMS
Round bar (Diameter):  0.50mm to 800mm
Square bar / Flat bar:   3mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W1000- 2500mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.  

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