Abrasion resistant machinable white cast iron

Details Abrasion resistant machinable white cast iron Abrasion resistant machinable white cast iron

Filed on

1982-01-18

Date issued

1983-07-26

Examiner

Skiff, Peter K.

Patent Class

Specialized metallurgical processes, compositions for use therei

SubClass

Processes

SubSubClass

Free metal or alloy reductant contains magnesium

Other Related Categories

75128D, 148 35, 148138, 148141, C22C 3856

Type

Patent

Status

active

Patent number

043952844

Description

ABSTRACT:
A cast iron alloy composition comprising 2.5-3.5% carbon, 0.5-1.0% manganese, 0.25-1.5% silicon, 13-19% chromium, 0.8-3.0% nickel, balance essentially iron which is machinable in the annealed condition and abrasion resistant in the hardened condition. The alloy may be annealed by furnace cooling, at a rate between 100.degree. C. and 350.degree. C./hr., from the austenitizing temperature, and hardened by air cooling from the austenitizing temperature.

REFERENCES:
patent: 4325758 (1982-04-01), Milligan

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