ASTM A TP / L Stainless Steel Pipes and Tubes is the low carbon version of stainless. With the addition of molybdenum, the steel is popular for . L. L. Elements. S S S S S (C) Carbon, max. (Mn) Manganese, max. This standard is issued under the fixed designation A/AM; the 1 This specification is under the jurisdiction of ASTM Committee A01 on.

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With the addition of molybdenum, the steel is popular for use in severe corrosion environments due to the materials immunity from boundary carbide precipitation sensitisation. The material is widely used in heavy gauge welded components and weld annealing is only required where the material is for use in high stress environments. Background of L Stainless Steel Pipes and Tubes Grade is the standard asrm grade, second in importance to amongst the asmt stainless steels.

The molybdenum gives better overall corrosion resistant properties than Gradeparticularly higher resistance to pitting and crevice corrosion in chloride environments. It has excellent forming and welding characteristics.


It is readily brake or roll formed into a variety of parts for applications in the industrial, architectural, and transportation fields. Grade also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.

Grade L, the low carbon version of and is immune from sensitisation grain boundary carbide precipitation.

ASTM A Specifications | Penn Stainless Products

Thus it is extensively used in heavy gauge welded components over about 6mm. Grade H, with its higher s269 content has application at elevated temperatures, as does stabilised grade Ti.

The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures. Composition ranges for grade of stainless ast. Mechanical properties of grade stainless steels. Typical physical properties for grade stainless steels. Grade specifications for grade stainless steels.

These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents.

ASTM A269 Specifications

If exact equivalents are needed original specifications must be consulted. Corrosion Resistance of L Stainless Steel Pipes and Tubes excellent in a range of atmospheric environments ast many corrosive media – generally more resistant than Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about C.


In many marine environments does exhibit surface corrosion, usually visible as brown staining.

This is particularly associated with crevices and rough surface finish. These grades cannot be hardened by thermal treatment.

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Clear labels are tagged on the outside of the package for easy identification of the quantity and product I. Great care is taken during operation and transportation.

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