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  • 301 Stainless Steel

    301 Stainless Steel

    Type 301 Stainless Steel is covered by the following specifications:ASTM A240, ASTM A666.

    Chemical Composition:

    Element Type
    Carbon 0.15 max.
    Manganese 2.00 max.
    Sulfur 0.030 max.
    Phosphorus 0.045 max.
    Silicon 0.75 max.
    Chromium 16.00 – 18.00
    Nickel 6.00 – 8.00
    Nitrogen 0.10 max.

    Mechanical Properties:

    Type Yield Strength 0.2% offset (KSI) Tensile Strength (KSI) % Elongation (2" Gauge length) Hardness Rockwell
    301 Ann (typical) 40 110 min. 60 HRB 85
    301 ¼ Hard 75 min. 125 min. 25 min. HRC 25 - 32(typical)
    301 ½ Hard 110 min. 150 min. 18 min. HRC 32 - 37(typical)
    301 ¾ Hard 135 min. 175 min. 12 min. HRC 37 - 41(typical)
    301 Full Hard 145 min. 185 min. 8 min HRC 41 - 46(typical)


    Formability
    Type 301 can be readily formed and drawn. Due to its high workhardening rate, intermediate annealing may be necessary for severe drawing and forming operations. Type 301 may not be suitable in certain severe forming applications where multiple forming operations are required.

    Heat Treatment
    Type 301 is non-hardenable by heat treatment. Annealing: Heat to 1900 – 2050 °F (1038 – 1121 °C), then water quench. Stress Relief Annealing: Heat to 500 – 900 °F (260 – 482 °C), then air cool.

    Weldability
    The austenitic class of stainless steels is generally considered to be weldable by the common fusion and resistance techniques. Special consideration is required to avoid weld “hot cracking” by assuring formation of ferrite in the weld deposit. This particular alloy is generally considered to have similar weldability than the most common alloy of this stainless class, Type 304L Stainless Steel. A major difference is the high C content for this alloy, which can cause the weld heataffected-zones to be susceptible to intergranular corrosion in certain environments. When a weld filler is needed, AWS E/ER 308 is most often specified. Type 301 Stainless Steel is well known in reference literature and more information can be obtained in the following ways:
    1. ANSI/AWS A5.9, A5.22 and A5.4 (filler metals, minimum UTS and elongation).
    2. “Welding of Stainless Steels and Other Joining Methods,” SSINA,(800:982-0355).
    3. ANSI/AWS B2.1.009:2002 (GTAW 300’s @ 0.50 in. – 0.14 in.).
    4. ANSI/AWS B2.1-8-024:2001 (GTAW 300’s @ 0.125 in. – 1.5 in.).
    5. ANSI/AWS B2.1-8-013:2002 (SMAW 300’s @ 0.050 in. – 0.14 in.).
    6. ANSI/AWS B2.1-8-025:2001 (SMAW 300’s @ 0.125 in. – 1.5 in.).
    7. ANSI/AWS B2.1-8-005:2002 (GMAW 300’s @ 0.050 in. – 0.14 in.).

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