# US 4,394,168 A · Austenitic wear resistant steel

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,394,168 A
- Document ID: US4394168A
- Status: Granted
- Kind: A
- Application number: 06/230,630
- Filed: 1981-02-02
- Granted: 1983-07-19
- Earliest claimed: 1980-07-07
- Assignees: A/S Raufoss Ammunisjonsfabrikker
- Inventors: Tor Hartvig; Petter Fjellheim
- Web page: https://patentgrep.com/patent/US4394168A

## CPC

- C22C 38/38: with more than 1.5% by weight of manganese
- C22C: ALLOYS (treatment of alloys C21D, C22F)

## Abstract

Austenitic steel having 16-25% Mn, 1,1-2,0% C, 0,2-2,0% Si, 0,5-5% Cr, 0,1-0,5% Ti, 0,3-4,0% Mo with or without addition of up to 0,5% of one or more of Ce, Sn and carbide forming elements like V, W, Nb (Cb), max. 5% Ni and max. 5% Cu, the remainder being Fe and impurities to max. 0,1% P and 0,1% S.

## Claims

### Claim 1

An austenitic wear resistant steel having good wear resistance and serviceability when subjected to abrasive and combined abrasive stresses and impact stresses consisting essentially of, in percentage by weight:
______________________________________ 16.-25. Mn 1.0-2.0 C 0.5-5.0 Cr 0.2-2.0 Si 0.1-0.5 Ti 0.3-4.0 Mo 0.0-0.5 one or more of Ce, Sn, V, W or Nb (Cb) 0.0-5.0 Ni 0.0-5.0 Cu 0.0-0.1 P (impurity) 0.0-0.1 S (impurity) remainder to 100% Fe. ______________________________________

### Claim 2 (depends on 1)

The austenitic wear resistant steel of claim 1 consisting essentially of, in percentage by weight:
______________________________________ 19.0-19.6 Mn 1.6-1.9 C 2.3-3.6 Cr 0.43-0.65 Si 0.1-0.3 Ti 1.1-2.7 Mo 0.0-0.1 P (impurity) 0.0-0.1 S (impurity) remainder to 100% Fe. ______________________________________

### Claim 3 (depends on 2)

The austenitic wear resistant steel of claim 2, consisting essentially of, by weight:
______________________________________ 19.5% Mn 1.6% C 2.3% Cr 0.51% Si 0.3% Ti 2.0% Mo, ______________________________________
the remainder being Fe and impurities.

### Claim 4 (depends on 2)

The austenitic wear resistant steel of claim 2, consisting essentially of, by weight:
______________________________________ 19.2% Mn 1.8% C 2.3% Cr 0.51% Si 0.3% Ti 2.0% Mo, ______________________________________
the remainder being Fe and impurities.

### Claim 5 (depends on 2)

The austenitic wear resistant steel of claim 2, consisting essentially of, by weight:
______________________________________ 19.5% Mn 1.8% C 3.5% Cr 0.48% Si 0.1% Ti 2.7% Mo, ______________________________________
the remainder being Fe and impurities.

### Claim 6 (depends on 2)

The austenitic wear resistant steel of claim 2, consisting essentially of, by weight:
______________________________________ 19.4% Mn 1.6% C 1.3% Cr 0.65% Si 0.1% Ti 1.1% Mo, ______________________________________
the remainder being Fe and impurities.

### Claim 7 (depends on 2)

The austenitic wear resistant steel of claim 2, consisting essentially of, by weight:
______________________________________ 19.6% Mn 1.6% C 2.3% Cr 0.51% Si 0.3% Ti 1.7% Mo, ______________________________________
the remainder being Fe and impurities.

### Claim 8 (depends on 2)

The austenitic wear resistant steel of claim 2, consisting essentially of, by weight:
______________________________________ 19.2% Mn 1.8% C 2.3% Cr 0.51% Si 0.2% Ti 2.0% Mo, ______________________________________
the remainder being Fe and impurities.

### Claim 9 (depends on 2)

The austenitic wear resistant steel of claim 2, consisting essentially of, by weight:
______________________________________ 19.0% Mn 1.9% C 3.6% Cr 0.43% Si 0.1% Ti 2.7% Mo, ______________________________________
the remainder being Fe and impurities.