17-4PH ANNEALED STAINLESS STEEL

17-4PH ANNEALED STAINLESS STEEL

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The 17-4 stainless steel grade is an age-hardening martensitic alloy that combines high corrosion resistance and strength. Unlike conventional martensitic steels, it weldable by all standard methods, and achieves hardening with simple low-temperature treatment over a short period of time.

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  • Product Detail
  • | Technical Information
  • | Packaging
    • Commodity name: 17-4PH ANNEALED STAINLESS STEEL

    The 17-4 stainless steel grade is an age-hardening martensitic alloy that combines high corrosion resistance and strength. Unlike conventional martensitic steels, it weldable by all standard methods, and achieves hardening with simple low-temperature treatment over a short period of time.

    Product Information

    Alloy 17-4 is a chromium-copper precipitation hardening stainless steel that is used for applications requiring high strength and a moderate level of corrosion resistance. It is one of the most widely used precipitation hardening grades, as it has high strength hardness up to about 572°F while demonstrating good corrosion resistance in all heat treated conditions. Alloy 17-4 has adequate resistance to atmospheric corrosion or in diluted acid salts where its corrosion resistance is equivalent to Alloy 304 or 430. Alloy 17-4 can be heat treated to a variety of temperatures to develop a wide range of properties. Its mechanical properties can be optimized with heat treatment where very high yield strength up to 180 ksi can be achieved. Alloy 17-4 should not be used at temperatures above 572°F or at very low temperatures.

    Technical data

    17-4 Stainless Steel
    This martensitic precipitation hardening stainless steel has a combination of high hardness and strength after suitable heat treatment. It also has similar corrosion and heat resistance to Grade 304. The two terms "Type 630" and "17-4PH" refer to the same grade.

    Composition:

    • Carbon: 0.07 max
    • Manganese: 1.00 max
    • Phosphorus: 0.040 max
    • Sulfur: 0.030 max
    • Silicon: 1.00 max
    • Chromium: 15.00 - 17.50
    • Nickel: 3.00 - 5.00
    • Copper: 3.00 - 5.00
    • Iron: Balance

    Physical Properties:

    • Melting Point: 2560 - 2625°F (1404 – 1440°C)
    • Density: 0.282 lbs/in3 / 7.8 g/cm3
    • Modulus of Elasticity in Tension: 28.5 X 106 psi / 197 GPa

    Mechanical Properties:

    • Condition: Solution Treated (A)
    • Tensile Strength Minimum (psi): 160,000
    • Yield Strength Minimum 0.2% offset (psi): 145,000
    • % Elongation in 2” Typical: 5%
    • Hardness: Rockwell B85
    • Condition: Hardened + Aged (TH1050)
    • Tensile Strength Typical (psi): 200,000
    • Yield Strength Typical 2% offset (psi): 185,000
    • % Elongation in 2": 8%
    • Hardness: Rockwell C35
    • Condition: Aged (H1075)
    • Tensile Strength Typical (psi): 175,000
    • Yield Strength Typical 2% offset (psi): 165,000
    • % Elongation in 2": 8%
    • Hardness: Rockwell C37
    • Condition: Aged (H900)
    • Tensile Strength Typical (psi): 210,000
    • Yield Strength Typical 2% offset (psi): 200,000
    • % Elongation in 2": 7%
    • Hardness: Rockwell C45
    Key words:
    • 17-4PH ANNEALED STAINLESS STEEL

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