S154D
2025-08-05 15:05:00   Origin：   Remark：0 Click：

TECHNICAL DATA SHEET - S154D

OFFICIAL TEST CERTIFICATE: issued by TUV - SGS -  BV
MATERIAL CATEGORY: Aircraft "S" series alloy structural steel
TYPE OF STEEL: Cr-2.5%Ni-Mo Steel Series
MELTING PROCESS - EAF + AOD / + ESR

CHEMICAL COMPOSITIONS (mass weight %)    
Carbon, C (％): 0.27 ~ 0.35
Silicon, Si (％): 0.15 ~ 0.40
Manganese, Mn (％): 0.45 ~ 0.80
Phosphorus, P (％)≤: 0.025
Sulfur, S (％)≤: 0.015
Chromium, Cr (％): 0.60 ~ 0.90
Nickel, Ni (%): 2.30 ~ 2.80
Molybdenum, Mo (％): 0.45 ~ 0.65

MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: Heat treatment + QT
Tensile strength, Rm ≥ MPa: 1000 ~ 1200
Yield strength, Rp0.2 ≥ MPa: 850
Elongation, A5 ≥ (%): 11.0
Impact strength, AKv ≥ J: -
Hardness HBS: 362 max.

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 rod.
Mechanical parts - connecting rod, bolt and nuts, Multidiameter shaft.

PROFILE & DIMENSIONS
Round bar / disc (diameter): 5.5 to 550mm
Square bar / flat bar: 8 to 600mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 - 300 X W10 - 1000mm X Lmm
Sheet steel via cold rolled: T1.0 - 4 X W5 - 1000 X Lmm
Steel strip via cold rolled: T0.5 - 3 X W5 - 200 X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.

ADVANTAGE & SUPERIOR SERVICE
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.