ASTM stands for American Society for Testing and Materials .ASTM is not only for metals but it for other materials also.
For example: On stainless steel 304 tubes it is mentioned by supplier
ASTM A249 TP304
Where TP304 –means type 304 stainless steel
Where ASTM A249 –is the standard specification for welded Austenitic steel boiler, super heater, and heat exchanger and condenser tubes. Which under goes following tests.
1. Heat treatment of stainless steel
2. Chemical composition
3. Tensile requirements
4. Hardness requirements
5. Grain Size Requirement
6. Mechanical Tests
i) Tension test
ii) Flattening test
iii) Flange test
iv) Reverse-bend Test
v) Hardness Test
vi)Hydrostatic or non-destructive Electric test
7. Supplementary Requirements
i) Pneumatic Test
ii) Inter-granular Corrosion Test
iii) Weld Decay Test
iv) Stress relieved annealed Test
Disclaimer :This is an informative article please go through ASTM booklet for any quote.