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The
high tension material supports the aircraft that the advanced technology
concentrated.
Nippon Koshuha's high tension material
and constant elasticity material are indispensable in a wide field
such as the motor, tools, and aircraft parts. The high tension material
that appears from excellent manufacturing technology is represented
by the following two. Precipitation hardening stainless steel possesses
good corrosion resistance, heat resistance, and high strength, and
can be used as spring, bolt, and aircraft component. Maraging steel
possesses good weldability in addition to high toughness and strength,
and can be used as spring, tool, and parts for high speed rotor.
Constant elasticity material has the characteristic into which elasticity
modulus does not change by a surrounding temperature change, and
can be used as parts for spring scale, clock, precision instrument. |
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Springs
manufactured from
special alloy wire |
Bolts
and cold forging products manufactured from Maraging steel and nickel
span C |
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| High
tension material |
| Class |
Grade |
Equivalent alloy |
Principal chemical composition |
characteristic |
Example of usage |
| Precipitation
hardening stainless steel |
KTA17-7 |
17-7PH |
17Cr-7Ni-1Al-Fe |
Corrosion
resistance equal with the stainless steel
High strength |
Spring,
Ring, Washer, Aircraft components |
| KTA17-4 |
17-4PH
|
17Cr-4Ni-3Cu-Nb-Fe |
| KTA15-5 |
15-5PH |
15Cr-5Ni-3Cu-Nb-Fe |
| KTA13-8 |
PH13-8MO |
13Cr-8Ni-2Mo-Fe |
Spring,
aircraft components |
| Maraging
steel |
KMS18-14 |
- |
18Ni-4Mo-8Co-Ti-Al-Fe |
High
strength and high toughness
Good heat resistance up to 400
Good cold workability
Good weldability |
High
strength spring, High speed rotor, Tool. |
| KMS18-17 |
- |
18Ni-4.5Mo-8Co-Ti-Al-Fe |
| KMS18-20 |
- |
18Ni-5Mo-8.5Co-Ti-Al-Fe |
| KMS18-22 |
- |
18Ni-4Mo-12Co-Ti-Al-Fe |
| KMS18-24 |
- |
18Ni-4Mo-12.5Co-Ti-Al-Fe |
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| Constant
elasticity material |
| Class |
Grade |
Equivalent alloy |
Principal chemical composition |
modulus of longitudinal elasticity
G(N/mm2) |
modulus of transverse elasticity
E(N/mm2) |
Mechanical property |
Example of usage |
| Tensile strength(N/mm2) |
Elongation () |
Hardness |
| Wataru
elastic material |
KTA-EL |
ELINVAR |
36Ni-12Cr-1.5Mn-1.5Si-2W-Fe |
78,400`
83,300 |
- |
740 |
30 |
HV230 |
Spring |
| KTA-NSC |
Ni-SPAN-C |
42Ni-5.5Cr-2Ti-Al-Fe |
176,400`
196,000 |
68,600`
73,500 |
590`1,370 |
- |
HRC42 |
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| @ |
| The trademark
quoted on this page and the proprietary rights are as shown in the
following |
| Trade mark |
Name of the company |
Trade mark |
Name of the company |
| DISCALOY |
Westinghouse Electric |
KOVAR |
Carpenter technology |
| ELINVAR |
Imphy Alloys |
MONEL |
INCO Alloys |
| HASTELLOY |
Haynes International |
NIMONIC |
INCO Alloys |
| INCONEL |
INCO Alloys |
NISPANC |
INCO Alloys |
| INCOLOY |
INCO Alloys |
WASPALOY |
United Technologies. |
| INVAR |
Imphy Alloys |
@ |
@ |
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