US 5,601,411 A · Stainless steel type 13Cr5Ni having high toughness, and usage the same

Abstract

High toughness stainless steel type 13Cr5Ni containing C: 0.008-0.03% (by weight, all of the following elements), Si: max. 1%, Mn: max. 2%, Cr: 10.0-14.0%, Ni: 4.0-7.0%, and Mo: 0.2-2.0%, in which (Cr/Ni) ratio is in a range of 2.0-3.0 or (C/Mo) ratio is in a range of 0.015-0.1, as a structural material for fluid machinery, austenitic stainless steel containing C: 0.10-0.30% (by weight, all of the following elements), Si: max. 1%, Mn: max. 2%, Cr: 16.00-23.00%, Ni: 1.00-8.00%, and Co: 2.00-9.00%, and Ni+Co: 6.00-12.00% as a weld padding layer forming material, and fluid machinery using the same.

Claims4

Dependent claims

A runner for a hydraulic turbine comprising cast members made of stainless steel wherein the stainless steel is high toughness 13Cr5Ni group stainless steel comprising:

C:
0.008-0.03% (by weight, all of the following elements);
Si:
max. 1%.;
Mn:
max. 2%;
Cr:
10.0-14.0%;
Ni:
4.0-7.0%;
and
Mo:
0.2-2.0%;
wherein the (Cr/Ni) ratio is in a range of 2.0-3.0.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application

08/492,449Filed 19 Jun 1995

Priority

JP 6-15824717 Jun 1994

Granted

11 Feb 1997

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

B23P 6/007
Repairing turbine components, e.g. moving or stationary blades, rotors,: using only additive methods, e.g. build-up welding
B23K 35/3086
With Cr as next major constituent: containing Ni or Mn
B32B 15/011
All layers being exclusively metallic: all layers being formed of iron alloys or steels
F03B 3/12
Machines or engines of reaction type; Parts or details peculiar thereto: blades; Blade-carrying rotors

Stainless steel type 13Cr5Ni having high toughness, and usage the same

Life of this patent

Stainless steel type 13Cr5Ni having high toughness, and usage the same

Life of this patent

Abstract

Claims4