BS 3146-1:1974

Cooperating organizations
Foreword
Specification
1. General requirements
1.1 Scope
1.2 Definitions
1.3 Information to be supplied by the purchaser
1.4 Method of manufacture
1.5 Freedom from contamination
1.6 Chemical composition
1.7 Tolerances
1.8 Freedom from defects
1.9 Heat treatment
1.10 Provision and preparation of mechanical test
      samples
1.11 Mechanical tests
1.12 Retests
1.13 Non-destructive testing
1.14 Rectification of defects
1.15 Identification
1.16 Manufacturer's certificate
1.17 The rounding of numbers rule
2. Specific requirements for carbon and low alloy steel
    investment castings
Type CLA 1: Carbon steel castings
Type CLA 2: 1 1/2 % manganese steel castings
Type CLA 3: 700 N/mm squared to 850 N/mm squared alloy
             steel castings
Type CLA 4: 850 N/mm squared to 1000 N/mm squared alloy
             steel castings
Type CLA 5: Steel castings having a minimum tensile
             strength of 1000 N/mm squared
Type CLA 7: 3% chromium-molybdenum steel castings
Type CLA 8: Carbon steel castings for surface hardening
Type CLA 9: Carbon case hardening steel castings
Type CLA 10: 3% nickel case hardening steel castings
Type CLA 11: 3% chromium-molybdenum nitriding steel
             castings
Type CLA 12: 1% chromium steel castings (abrasion
             resisting)
Type CLA 13: Nickel-molybdenum cast hardening steel
             hardening
Appendices
A. Procedure for repairing castings by welding
B. Stress unit conversion
Table
1. Recommended electrodes, pre-heating and post-weld
    heat treatment temperatures
Figure
1. Types of test sample