BS CS22 Alloy Steel Bar CS22 Round Bars CS22 Rods

Product Description

BS CS22 Steel Overview

BS CS22 is a case-hardening low-carbon steel specified under the British Standard system (often associated with BS 1449 or related aerospace/specialized engineering standards). It is designed specifically for components that require a hard, wear-resistant surface while maintaining a ductile and shock-resistant core.

This grade is essentially a "cleaner" version of standard mild steel, with a carbon range typically between $0.20\% - 0.25\%$, allowing it to respond well to carburizing treatments.

Technical Specifications (Typical)

Chemical Composition (%)

International Equivalents

BS CS22 aligns closely with other international case-hardening and structural carbon steels:

Key Characteristics

1. Case Hardening: The primary advantage of CS22 is its suitability for carburizing. Because the base carbon is low, it won't become brittle when heated, but it will absorb carbon into the "case" (outer layer) to reach high hardness levels.

2. Machinability: CS22 has excellent machining characteristics. It produces a good surface finish and is relatively easy on cutting tools.

3. Weldability: Highly weldable. It does not typically require pre-heating or post-weld heat treatment unless the sections are very thick or the component has already been case-hardened.

4. Formability: Excellent cold-forming and bending properties in the annealed or normalized state.

Common Available Formats

• Round Bars: Frequently supplied as Bright Drawn (standard for precision machining) or Hot Rolled.

• Rods: Used for small-diameter shafts, pins, and wire-form products.

• Sheets/Plates: Often used in case-hardened wear plates for industrial machinery.

Common Applications

• Mechanical Components: Camshafts, gudgeon pins, and light-duty gears that require a hard skin.

• General Engineering: Spindles, bushings, spacers, and ratchets.

• Fasteners: Bolts and studs where toughness is prioritized over high tensile strength.

• Automotive: Shifter linkages, brackets, and guide pins.

Thermal Processing Data

• Forging: 900°C – 1250°C.

• Normalizing: 880°C – 920°C.

• Carburizing: 880°C – 930°C (Usually followed by quenching in water or oil).

• Core Refining: 870°C – 900°C.

• Case Hardening (Refining): 760°C – 790°C.