AISI 4340 / SAE 4340
2024-12-10 10:10:00 Origin： Remark：0 Click：
Description SAE 4340 Stocklist, Suppliers SAE 4340 Inventory, Ex-stock AISI 4340 Round bars from Steelmaking, ESR melted, Blooming, Hot forging,Hot rolling,Heat treated
TECHNICAL DATA SHEET - AISI 4340 & SAE 4340
MATERIAL CATEGORY: SAE, AISI, UNS system alloy structural steel
MATERIAL SPECIFICATIONS: SAE J1249 -2000
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
CHEMICAL COMPOSITIONS ( mass weight %)
Carbon, C (％): 0.38 ~ 0.43
CHEMICAL COMPOSITIONS ( mass weight %)
Carbon, C (％): 0.38 ~ 0.43
Silicon, Si (%): 0.15 ~ 0.35
Manganese, Mn (％): 0.60 ~ 0.80
Manganese, Mn (％): 0.60 ~ 0.80
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.040
Chromium, Cr (%): 0.70 ~ 0.90
Nickel, Ni (%): 1.65 ~ 2.00
Molybdenum, Mo (%): 0.20 ~ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMP
Mechanical property ≥ σb / MPa: 745
Mechanical property ≥ σs / MPa: 470
Mechanical property ≥ δ5 (%): 22
Mechanical property ≥ σs / MPa: 470
Mechanical property ≥ δ5 (%): 22
Mechanical property ≥ ψ (％): 50.0
Hot working temperature /℃ 1100 ~ 850
MAIN FEATURES AND MELTING PROCESS
AISI 4340 alloy steels shall be manufactured by melting process EAF+ LF + VD, BFF + 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
FORMS AND DIMENSIONS
Round bar / rod / disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 8mm to 600mm
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 W1000- 2500mm X L1000-12000mm
Forging piece: stepped shafts, other different shapes based on OEM.
AISI 4340 alloy steels shall be manufactured by melting process EAF+ LF + VD, BFF + 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
FORMS AND DIMENSIONS
Round bar / rod / disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 8mm to 600mm
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 W1000- 2500mm X L1000-12000mm
Forging piece: stepped shafts, other different shapes based on OEM.
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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