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Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Specifications
Supply Ability :
10000 pcs/month
Payment Terms :
L/C,T/T
Custom shapes :
Available upon request
Features :
Excellent Wear and Corrosion Resistance
Price :
Negotiation
Carbide Processing :
High Durability
Feature :
Enhanced Durability
Impact Resistance :
Excellent
MOQ :
1pc
Model Number :
SX-2272
Place of Origin :
China
Certification :
ISO9001
Melting Point :
2,870°C
Brand Name :
Sanxin
Tensile Strength :
1,900 MPa
Alloy Specification :
YG6/YG8/YG10X/YG20C
Magnetic Properties :
Non-magnetic available
Wear Rate :
Less than 0.1 mm³/MJ
Description
Tungsten Carbide Precision Punch
Product Overview

This tungsten carbide (cemented carbide) micro precision punch features a body diameter of Φ 1.95 mm and tip radius of R0.2 mm. Designed for micro-hole blanking, precision step forming, and high-speed punching applications, it is ideal for progressive dies, high-speed stamping dies, and powder metallurgy molding tools requiring long service life and strict dimensional consistency.

Material & Performance

Manufactured from ultra-fine grain tungsten carbide (WC grain size ≤ 0.5 μm) with 6%-10% cobalt binder. This material combination delivers high hardness (≥ 90.5 HRA) and high transverse rupture strength (≥ 3000 MPa). Compared to conventional high-speed steel punches (M2, ASP23), service life is 5-10 times longer, particularly when punching hard materials like stainless steel, silicon steel, and copper alloys.

Manufacturing Accuracy
  • 5-axis CNC precision grinding + mirror polishing
  • Diameter tolerance: ± 0.002 mm (±0.001 mm achievable)
  • Radius profile deviation: ≤ ±0.003 mm
  • Surface roughness: Ra ≤ 0.05 μm (mirror-like) - reduces sticking and frictional heat
  • Concentricity & cylindricity: ≤ 0.005 mm - suitable for precision guide bushings
Typical Applications
Industry Specific Use
Electronic connectors Terminal holes, guide pin holes
Precision stamping Stainless steel shims, springs, lead frames
Powder metallurgy Micro steps, bumps, cavity details
Medical devices Micro-hole punching, guide tube forming
Automotive parts Injector shims, sensor housing micro-holes
Suitable Stamping Materials
  • Stainless steel (SUS 304, 301, 430)
  • Silicon steel
  • Copper alloys (beryllium copper, brass)
  • Aluminum foil, nickel strip
  • Engineering plastic sheets
Packaging & Marking
  • Individual plastic protection tube + rust preventive oil
  • 10 pieces / box, with dimension, material, batch number on label
  • Optional 3D inspection report (including profile, roundness, roughness)
Technical Specifications
Parameter Category Item Standard / Range Tolerance / Remark
Dimensional Body diameter D Φ1.95 mm ±0.002 mm (±0.001 mm achievable)
Tip radius R R0.2 mm ±0.005 mm
Overall length L 30 - 80 mm (custom) ±0.05 mm
Entry chamfer (optional) C0.1 - C0.3 tip or back end
Shank diameter (if shouldered) per drawing, typical Φ3.0 / Φ4.0 ±0.005 mm
Material Grade YG6 / YG8 / YG10X / ultra-fine selected for wear or toughness
WC grain size 0.4 - 0.8 μm ultra-fine grade
Cobalt content 6% / 8% / 10% higher = tougher
Performance Comparison
Tungsten Carbide Punch (Φ1.95-R0.2) vs. Other Materials
Parameter Tungsten Carbide Punch HSS Punch (M2 / ASP23) Carbide + Coated Punch
Hardness (HRA / HRC) 90.5 HRA (~74 HRC) 62-66 HRC 90 HRA + coating
TRS (MPa) 3000 - 3800 3500 - 4500 (tougher) 2800 - 3500
Wear resistance ★★★★★ ★★★ ★★★★★
Chipping resistance ★★★★ (due to R0.2) ★★★★★ ★★★☆
Suitable stamping speed High speed (800+ spm) Medium-high speed High speed
Life vs. M2 5 - 10* 1* 6 - 12*
Relative cost Medium-high Low High
Recommended use High wear, micro holes, long life General duty, easy change Dry stamping, sticky materials
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
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Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm

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Product Detail
Supply Ability :
10000 pcs/month
Payment Terms :
L/C,T/T
Custom shapes :
Available upon request
Features :
Excellent Wear and Corrosion Resistance
Price :
Negotiation
Carbide Processing :
High Durability
Contact Supplier
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm
Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm

Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd

Verified Supplier
8 Years
hunan, zhuzhou
Since 2003
Business Type :
Manufacturer, Importer, Exporter, Seller, Other
Main Products :
Tungsten Carbide Processing, Tungsten Carbide Nozzle, Tungsten Carbide Punch
Total Annual :
8000000-10000000
Employee Number :
150~180
Certification Level :
Verified Supplier
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