About Material Characteristics

A. ASTM A 105 is a specification covers forged carbon steel piping components for ambient and higher temp. service in pressure systems. Included are flanges, fittings, valves, and similar parts. Forgings made to this specification are limited to a max. weight of 10 000 lb (4540 kg). Larger forgings may be ordered to specification A266. Tubesheets and hollow cylindrical forgings for pressure vessel shells are not included within the scope of this specifications. The weldability of that material is good.

B. Chemical requirements :

• Carbon 0.35 max., • Manganese 0.60-1.05, • Phosphorus 0.035 max.,

• Sulfur 0.040 max., • Silicon 0.10-0.35, • Copper 0.40 max.,

• Nickel 0.40 max., • Chromium 0.30 max., • Molybdenum 0.12 max.,

• Vanadium 0.05, • Columbium 0.02 max.,

C. Mechanical requirements:

• Tensile strength, min. : 70 000 PSI

• Yield strength, min. : 36 000 PSI

• Basic min. elongation for walls 5/16" and over in thickness, strip tests : 30

When standard round min. 2" gage length or smaller, elongation : 22

• Hardness, HB, max., : 187

So, if you have an equivalent material like ASTM A105, you can use it.

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