Product Materials Handled by Takaoka Seisakusho

Home > About Our Services > Product Materials Handled by Takaoka Seisakusho

Product Materials Handled by Takaoka Seisakusho

Gray iron casting

The function of graphite cuts continuity as a metal organization, making this a superior material for machinability and processability. It is used for beds and tables for machine tools, cylinder liners for diesel engines, casings, crankcases, and oil pressure machines for its high vibration absorbency and strength against thermal shock.

Gray cast iron is a material that is classified as an ordinary cast iron among cast iron products. While it offers superb castability, it is considered to be weak and brittle compared to other types of cast iron.

Table 1: Types of Ferrum Casting Offered by Takaoka Seisakusho
Materials Yield strength
N/mm2
Brinell hardness
HB
FC200 ≧200 223≧
FC250 ≧250 241≧
FC300 ≧300 262≧
FC350 ≧350 277≧

Compacted(vermicular) Graphite Iron Castings

Compacted(vermicular) Graphite Iron Castings have excellent characteristics of both Ferrum Casting and Ferrum Casting Ductile as they are in a vermicular state that is intermediate between the two. They offer higher mechanical properties than gray cast iron and greater thermal conductivity than spheroidal graphite.

There are increasing applications for automobile parts such as brake parts which require durability against noise and vibrations by leveraging the greater damping capacity compared to diesel engine blocks or cylinder heads that require high rates of internal cylindrical pressure or spheroidal graphite cast iron.

Table 2: Types of Ferrum Casting Offered by Takaoka Seisakusho
Materials Yield strength
N/mm2
Endurance capacity
N/mm2
Elongation
%
Brinell hardness
HB
FCV350 ≧350 ≧225 ≧3 143-177
FCV410 ≧410 ≧265 ≧2 143-217

Spheroidal Graphite Iron Castings

While the graphite contained in gray iron castings consist of a schistose structure, here the graphite itself is orbicular. Because the crystallized graphite is spherical, it is slippery and abrasion resistance is greater.

This is considered for use when greater abrasion resistance is required than gray cast iron or when better mechanical properties are needed. The scope of use is broad, for example in leveraging its corrosion resistance due to the characteristically slow progress of corrosion due to the non-continuous layers of graphite.

Table 3: Types of Ferrum Casting Offered by Takaoka Seisakusho
Materials Yield strength
N/mm2
Endurance capacity
N/mm2
Elongation
%
Brinell hardness
HB
FCD450 ≧450 ≧280 ≧10 143-177
FCD500 ≧500 ≧320 ≧7 170-241
FCD600 ≧600 ≧370 ≧3 192-269
FCD700 ≧700 ≧420 ≧2 229-302

*We can also accept requests for FCD800 to FCD1200, etc.

High silicon ductile iron

High silicon ductile iron is 4.0% Si-0.6% Mo ferritic heat-resistant spheroidal graphite cast iron. It is mainly applied to the parts of the turbocharger (supercharger).
Parts of the turbocharger are required to have excellent heat and wear resistance because they are exposed to high temperature exhaust gas and sliding with other parts.
The exhaust gas temperature is approximately 800 ℃.

Table 4: Types of HiSiFCD
Materials Yield strength
N/mm2
Endurance capacity
N/mm2
Elongation
%
Brinell hardness
HB
HiSiFCD500 ≧520 ≧415 ≧6 187-241