Standard Test Method for Determining the Percentage of Alloyed or Unalloyed Iron Contamination Present in Powder Forged (PF) Steel Materials

Importancia y uso:

5.1 Cross-product contamination occurs whenever alloy steel powders are processed in the same equipment as iron powders.

5.2 Unalloyed iron particles, because they may not harden upon heat treatment, are a potential source of soft spots in low-alloy steel parts.

5.3 Alloyed iron particles, having higher hardenability than an iron or carbon steel matrix, are a potential source of hard spots.

5.4 Hard or soft spots may cause problems in service or machining.

5.5 The results of the tests may be used to qualify parts for shipment in accordance with guidelines agreed between purchaser and manufacturer or to check the suitability of mixes for use in powder forging.

Subcomité:

B09.11

Referida por:

B0848_B0848M-21

Volúmen:

02.05

Número ICS:

77.160 (Powder metallurgy)

Palabras clave:

cross-product contamination; powder forging (PF); powder forged (PF) parts and test specimens; powder forged (PF) steels;