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  2. Pitting resistance equivalent number - Wikipedia

    en.wikipedia.org/wiki/Pitting_Resistance...

    There are a few stainless steels which add tungsten (W), for those the following formula is used: PREN = %Cr + 3.3 × (%Mo + 0.5 × %W ) + 16 × %N. All % values of elements must be expressed by mass, or weight (wt. %), and not by volume. Tolerance on element measurements could be ignored as the PREN value is indicative only.

  3. SAE 304 stainless steel - Wikipedia

    en.wikipedia.org/wiki/SAE_304_stainless_steel

    4301-304-00-I and X5CrNi18-9, the ISO 15510 name and designation. UNS S30400 in the unified numbering system. A2 stainless steel outside the US, in accordance with ISO 3506 for fasteners. [4] 18/8 and 18/10 stainless steel (also written 18-8 and 18-10) in the commercial tableware and fastener industries. SUS304 the Japanese JIS G4303 equivalent ...

  4. Stainless steel - Wikipedia

    en.wikipedia.org/wiki/Stainless_steel

    Stainless steel, also known as inox, corrosion-resistant steel (CRES), and rustless steel, is an iron-based alloy containing a minimum level of chromium that is resistant to rusting and corrosion. Stainless steel's resistance to corrosion results from the 10.5%, or more, chromium content which forms a passive film that can protect the material ...

  5. SAE steel grades - Wikipedia

    en.wikipedia.org/wiki/SAE_steel_grades

    Type 304—the most common grade; the classic 18/8 (18% chromium, 8% nickel) stainless steel. Outside of the US it is commonly known as "A2 stainless steel", in accordance with ISO 3506 (not to be confused with A2 tool steel). [6] The Japanese equivalent grade of this material is SUS304.

  6. Specific strength - Wikipedia

    en.wikipedia.org/wiki/Specific_strength

    It is also known as the strength-to-weight ratio or strength/weight ratio or strength-to-mass ratio. In fiber or textile applications, tenacity is the usual measure of specific strength. The SI unit for specific strength is Pa ⋅ m 3 / kg , or N ⋅m/kg, which is dimensionally equivalent to m 2 /s 2 , though the latter form is rarely used.

  7. Strain hardening exponent - Wikipedia

    en.wikipedia.org/wiki/Strain_hardening_exponent

    In one study, strain hardening exponent values extracted from tensile data from 58 steel pipes from natural gas pipelines were found to range from 0.08 to 0.25, [1] with the lower end of the range dominated by high-strength low alloy steels and the upper end of the range mostly normalized steels.