Alloy Grade UNS: A4 – Alloy for General Structure

  • Overview

    Alloy Grade UNS A4 refers to a category of materials primarily designed for general structural applications, offering a balanced combination of mechanical properties like strength, ductility, and corrosion resistance. These alloys typically contain a mixture of elements tailored to provide good fabricability and formability, making them suitable for a wide range of structural and manufacturing needs. The composition of UNS A4 alloys often includes elements like carbon, manganese, and silicon, which contribute to improved hardness and resistance to wear. These alloys may also exhibit good weldability, ensuring ease of integration into various industrial processes. The general structure alloys in this category offer reliable performance in environments where both mechanical strength and versatility are important.

  • Typical Uses

    Cylinders, marine propulsion, rolls, shaft sleeves.

  • MetalTek Grade

    WC 1

Similar Specifications

Cast UNS: J13047

Wrought UNS: G86200

Cast Grade: A4

Cast ASTM: A217

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.25

Chromium: n/a

Manganese: 0.50-0.80

Iron: BAL

Copper: n/a

Nickel: n/a

Lead: n/a

Tin: n/a

Silicon: 0.6

Zinc: n/a

Other: Mo 0.45-0.65

Minimum Mechanical Properties

Tensile, ksi

0

Tensile, MPa

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Heat Treatment: Normalize And Temper

Explore Other Alloys

Gears

Non-Ferrous

Non-ferrous alloys are, literally, materials that are not iron-based. While others may provide non-ferrous materials of other materials, the MetalTek family of non-ferrous alloys are copper-based. In general, these materials deliver high strength, and excellent wear and corrosion resistance. They are often found in marine applications and also bushing, bearing, and gear environments.
Stainless Steel Parts

Stainless Steel

Stainless steels owe their ability to resist corrosion primarily to the presence of a passive film on their surface. Chromium is chiefly responsible for formation of the passive film. Iron ceases to rust at approximately 12% chromium content and resistance to oxidizing corrosives increases rapidly with chromium content up to approximately 20%.
Petrochemical Fittings

Specialty Alloys

Specialty Alloys comprise a broad group of materials that deliver properties for more demanding applications, use more exotic or expensive materials, or require special processes to manufacture. Where standard materials may not offer desired performance, specialty alloys (including those that are modified further) may be a sensible selection.