AISI 4135 SCM435 34CrMo4 Alloy steel
AISI 4135 MATERIAL CATEGORY: SAE, AISI, UNS
AISI 4135 CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.33 ~ 0.38
Si (%): 0.15 ~ 0.35
Mn (％): 0.70 ~ 0.90
P (％)≤: 0.035
S (％)≤: 0.040
Cr (%): 0.80 ~ 1.10
Ni (%): -
Mo (%): 0.15 ~ 0.25
AISI 4135 MECHANICAL PROPERTIES AND HOT WORKING
Mechanical property ≥ σb/MPa: 980
Mechanical property ≥ σs/MPa: 835
Mechanical property ≥ δ5 (%): 12.0
Mechanical property ≥ ψ (％): 45.0
Hot working temperature /℃: 1100～850
AISI 4135 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.
AISI 4135 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
AISI 4135 PRODUCT PROFILE AND SUPPLYING FORMS
Round bar (Diameter): 5.5mm to 650mm
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 ~ 2000mm X Coil
Heavy/middle plate via hot rolled: T60 - 400mm X W100 - 1000mm X L1000 - 5000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
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