Non-heat treated steels

Non-heat treated steels is a type of steel that can achieve the required properties without undergoing quenching and tempering processes, and is left as it is after hot rolling or hot forging. This can lead to energy savings and simplification of processes.

Main Manufactured Steel Types

SteelStrengthChemical CompositionStructureUses
CMnCrV
S40CV≧740MPa0.400.70~1.200.10~0.300.08~0.14Ferrite + Pearlite typeHot forging
S43CV 0.43
S45CV≧780MPa0.45
S48CV 0.48
SMNV45≧830MPa0.451.10~1.40
VMC15≧740MPa0.151.70~2.000.30~0.500.10~0.30Bainite typeHot forging
VMC25≧880MPa0.25
VMC35 0.35
SMT75≧740MPa0.32~0.461.00~1.800.15~0.500.08~0.20Ferrite + Pearlite typeDirect cutting
SMT90≧880MPa

Uses

Construction Machinery: Piston Rod, Pin, Shaft
Truck: Conrod, Crankshaft, Knuckle, Front Axle

Non-heat treated steels Used in Construction Machinery Parts

It is used in hydraulic cylinders, yokes, and rod heads of construction machinery.

Hydraulic Pressure Cylinder
Yoke
Rod Head

Non-heat treated steels Used in Trucks

It is used in critical components such as engines and undercarriages, and has gained high reliability.

Crankshaft, Conrod, Shaft
Knuckle

Characteristics (Toughness & Impact Value)

Contact for Special Steel Products

Steel Sales Department

+81-3-3536-3151