ASTM A228 Steel High Strength Forged and Hot Rolled Round Bar

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Polished
• Model NO.: round bar
• Special Use: Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Standard Sea-Worthy Package or as Required
• Specification: 1-40mm
• Trademark: Smooth
• Origin: China
• HS Code: 7214100000
• Production Capacity: 5000 Ton/Year

Product Description

ASTM A228 Steel
ASTM A228 is a standard specification for high-strength, cold-drawn steel wire used for the production of mechanical springs and wire forms. This specification covers a wide range of carbon and alloy steel wire in various sizes and shapes.

Chemical Composition
ASTM A228 steel wire is typically manufactured from high-carbon steel or alloy steel. The chemical composition of ASTM A228 steel may vary depending on the specific grade and application requirements. However, typical compositions include:
·Carbon (C): 0.70% - 1.00%
·Manganese (Mn): 0.20% - 1.20%
·Phosphorus (P): 0.035% max
·Sulfur (S): 0.040% max
·Silicon (Si): 0.10% - 0.30%
Other alloying elements, such as chromium (Cr), vanadium (V), and nickel (Ni), may be added to enhance certain properties of the steel wire, such as strength, toughness, and corrosion resistance.

Mechanical Properties
The mechanical properties of ASTM A228 steel wire are specified by the manufacturer and may vary depending on factors such as wire diameter, tensile strength, and surface condition. Typical mechanical properties include:
·Tensile Strength: 2240 MPa (325 ksi) minimum
·Yield Strength: 1960 MPa (285 ksi) minimum
·Elongation: 7% minimum (for wire diameter ≤ 0.025 inches)
·Modulus of Elasticity: 205 GPa (29700 ksi) minimum

Heat Treatment
·ASTM A228 steel wire is typically supplied in the as-drawn condition, which provides high tensile strength and hardness. However, it can undergo various heat treatment processes, such as stress relieving, annealing, or precipitation hardening, to achieve specific mechanical properties and improve formability.

Surface Finish
·The surface finish of ASTM A228 steel wire may vary depending on the manufacturing process and customer requirements. Common surface finishes include bright, matte, or coated to enhance corrosion resistance and improve appearance.

Applications
ASTM A228 steel wire is widely used in various applications requiring high-strength, durable springs and wire forms. Common applications include:
·Automotive and transportation components
·Industrial machinery and equipment
·Aerospace and defense systems
·Consumer electronics and appliances
·Medical devices and surgical instruments
·Sporting goods and recreational equipment