AISI/SAE 4121
2016-04-16 16:35:03 Origin： Remark：0 Click：
Technical specification of SAE/AISI/UNS system standard alloy structural steel AISI 4121 data sheet,SAE 4121 Chemical compositions,AISI 4121 Mechanical properties from Steelmaking, ESR melted, Blooming, Hot forging,Hot rolling,Heat treatment, Straightening, 100% Ultrasonic test, Cold working, Peeled or rough turned machining. Technical specification ASTM SAE J1249 -2000. We also possess the advanced precision machining equipments for catering for your different special requirements.
TECHNICAL DATA SHEET - AISI/SAE 4121
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 % )
C (％): 0.18 ~ 0.23
CHEMICAL COMPOSITION ( Mass Weight % )
C (％): 0.18 ~ 0.23
Si (%): 0.15 ~ 0.35
Mn (％): 0.75 ~ 1.00
Mn (％): 0.75 ~ 1.00
P (％)≤: 0.035
S (％)≤: 0.040
S (％)≤: 0.040
Cr (%): 0.45 ~ 0.65
Ni (%): -
Mo (%): 0.20 ~ 0.30
MECHANICAL PROPERTIES AND HOT WORKING
Mechanical property ≥ σb/MPa: 780
Mechanical property ≥ σs/MPa: 590
Mechanical property ≥ δ5 (%): 10
Mechanical property ≥ σs/MPa: 590
Mechanical property ≥ δ5 (%): 10
Mechanical property ≥ ψ (％): 40
Hot working temperature /℃: 1100～850
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
PROFILE AND DIMENSIONS
Round bar (Diameter): 5.5mm to 550mm
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 ~ 1200mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W10 - 1500mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
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
PROFILE AND DIMENSIONS
Round bar (Diameter): 5.5mm to 550mm
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 ~ 1200mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W10 - 1500mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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