AISI 8740
2016-06-06 13:38:57 Origin： Remark：0 Click：
Technical specifications SAE J1249 Grade AISI 8740 Round bar, Shaft, Plate ESR melted, SAE 8740 Heat treatment, 100% Ultrasonic test, Cold worked.
MATERIAL TECHNICAL DATA SHEET - Grade AISI 8740
MATERIAL CATEGORY: SAE, AISI, UNS system alloy structural steel
MATERIAL SPECIFICATIONS: SAE J1249 -2000
MATERIAL CATEGORY: SAE, AISI, UNS system alloy structural steel
MATERIAL SPECIFICATIONS: SAE J1249 -2000
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.38 ~ 0.43
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.38 ~ 0.43
Silicon, Si (%): 0.20 ~ 0.35
Manganese, Mn (％): 0.75 ~ 1.00
Manganese, Mn (％): 0.75 ~ 1.00
Phosphorus, P (％)≤: 0.035
Sulfur, S (％)≤: 0.040
Chromium, Cr (%): 0.40 ~ 0.60
Nickel, Ni (%): 0.40 ~ 0.70
Molybdenum, Mo (%): 0.20 ~ 0.30
MECHANICAL PROPERTIES AND HOT WORKING
Mechanical property ≥ σb/MPa: 895
Mechanical property ≥ σs/MPa: 415
Mechanical property ≥ δ5 (%): 22
Mechanical property ≥ σs/MPa: 415
Mechanical property ≥ δ5 (%): 22
Mechanical property ≥ ψ (％): 40
Hardness /annealed COND: 201 max.
Hot working temperature /℃: 1150～850
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 & Disc (diameter): 5.50mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W100 - 1500mm X L1000-12000mm
Forging piece: stepped shafts, other different shapes based on OEM requirement.
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 & Disc (diameter): 5.50mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W100 - 1500mm X L1000-12000mm
Forging piece: stepped shafts, other different shapes based on OEM requirement.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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