Key Feature

The Versatile Drawing and Forming Foundation Material. Hot-rolled semi-finished product designed for cold drawing, heading, and forming into wire-based products across industries.

The essential raw material for wire manufacturing, fastener production, and forming operations.

Available Grades

Austenitic: 302, 304/304L, 316/316L, 321, 347
Martensitic: 410, 420, 431, 440C
Ferritic: 430, 434, 439
Precipitation Hardening: 17-4PH, 17-7PH
Special Grades: 305 (low work hardening), 384 (extra low work hardening)

Comprehensive range optimized for different wire drawing and forming applications.

Standard Diameters

Common Range: 5.5mm - 20mm (7mm, 8mm, 9mm, 10mm, 12mm, 14mm most common)
Precision Sizes: Typically supplied in 0.5mm increments
Special Sizes: Custom diameters available
Coil Weight: 500kg - 2000kg standard coils

Diameters optimized for subsequent wire drawing reduction schedules.

Dimensional Tolerances

Diameter Tolerance: Typically ±0.3mm to ±0.5mm
Ovality: ≤0.5mm (difference between max and min diameter)
Surface Quality: Controlled seams, scratches, and scale
Decarburization Depth: Controlled per grade requirements
Coil Dimensions: Controlled inner/outer diameter and weight

Tolerances designed to ensure successful wire drawing operations.

Manufacturing Process

Continuous Casting: Liquid steel cast into billets
Hot Rolling: Billets heated and rolled to final diameter
Controlled Cooling: Optimized cooling for microstructure
Surface Treatment: Descaling, pickling, coating
Coiling: Formed into coils for handling and shipping

Modern continuous casting and rolling ensure consistent quality.

Surface Conditions

Hot Rolled: With mill scale (requires pickling)
Pickled: Acid cleaned to remove scale
Lime Coated: Temporary corrosion protection
Phosphated: For improved drawing performance
Copper Coated: For certain wire drawing applications

Surface preparation critical for successful wire drawing operations.

Mechanical Properties

Varies by grade and processing:
304 Hot Rolled: Rm ≥520 MPa, A ≥40%
316 Hot Rolled: Rm ≥520 MPa, A ≥40%
410 Hot Rolled: Rm ≥450 MPa, A ≥20%
302 Hot Rolled: Rm ≥520 MPa, A ≥40%
430 Hot Rolled: Rm ≥450 MPa, A ≥22%

Properties optimized for subsequent cold working operations.

Metallurgical Properties

Grain Size: Controlled ASTM 5-8 typical
Inclusion Control: Stringent limits for drawing quality
Microstructure: Uniform austenitic/ferritic/martensitic structure
Segregation: Minimal centerline segregation
Decarburization: Controlled depth per application requirements

Critical for wire drawing performance and final product quality.

Wire Drawing Performance

Drawing Reduction: Capable of 80-90% area reduction
Breakage Rate: <1% typical for quality material
Surface Quality: Maintains integrity during drawing
Work Hardening: Controlled rates for different grades
Annealing Requirements: Grade dependent between draws

Designed specifically for efficient wire manufacturing.

Coil Specifications

Coil Weight: 500-2000kg standard, custom weights available
Inner Diameter: 800-850mm typical
Outer Diameter: 1100-1300mm typical
Coil Height: Controlled for handling stability
Winding: Even, tension-controlled winding

Coil specifications optimized for handling and processing.

Key Standards

ASTM A555/A555M: General Requirements for Wire Rod
ASTM A580/A580M: Stainless Steel Wire
EN 10088-3: Stainless Steel Wire Rod
JIS G4308: Stainless Steel Wire Rod
ISO 16143-2: Stainless steel wire rod

Comprehensive standardization for quality assurance.

Common Applications

• Wire Drawing: Cold drawing into various wire diameters
• Fastener Manufacturing: Cold heading into bolts, screws, nuts
• Spring Production: Spring wire for automotive, industrial applications
• Welding Wire: Production of flux-cored and solid welding wire
• Textile Components: Wire for screens, filters, textile machinery
• Medical Devices: Surgical wire, suture material, implant components
• Construction: Cable wire, reinforcement wire, structural components

The foundational material for diverse wire-based product manufacturing.