High Hardness Ceramic Coated KCF Guide Pin for Welding Positioning with Customizable Sizes
Bloom welding is the manufacturer of KCF bars and KCF guide pins. We offer various sizes of guide pins, locating pins, bushings, and sleeves in materials including KCF alloy, ceramic coated, Zirconia ceramic, and Silicon nitride ceramic. We produce both standard sizes and custom-made pins according to customer drawings.
We specialize in manufacturing and supplying all kinds of resistance welding accessories including welding electrodes, electrode tips, cap tips, electrode holders, electrode arms, adapters, welding wheels, straight shanks, bent shanks, KCF guide pins, KCF sleeves, tip dresser tools, and welding testers.
| Code | Composition (wt%) | Tensile Strength (N/mm²) | Yield Strength (N/mm²) | Elongation (%) | Features | Application |
|---|---|---|---|---|---|---|
| KCF | Cr20, Al3, Fe Bal | 539 | 392 | 15 | Oxidation resistant | Brazing jigs, Guide pins for projection welding |
- Pin Material: KCF, AL2O3, ZrO2, Si3N4, Ceramic, Stainless Steel
- KCF Pins Diameter: M4, M5, M6, M8, M10, M12…
- Application: KCF guide pins are widely used on projection welding, nut welding, stud welding
Excellent electrical insulation properties for welding applications
Superior durability and long service life
Performs reliably in high-temperature environments
Resistant to thermal shock and rapid temperature changes
KCF material is a special metal material that undergoes a unique heat treatment process within a temperature range of 1000-1500 degrees. This process generates a 10-32μm thick high-quality insulation layer on the surface, which combines excellent wear resistance with high insulation resistance. The material is processed into various parts that provide insulation, wear resistance, and anti-oxidation functions, primarily used in resistance welding equipment.
While ceramic guide pins have traditionally been used as welding nut positioning pins, their poor toughness and fragility make KCF guide pins increasingly popular as a superior alternative.
| Material | Description | Characteristics |
|---|---|---|
| Ceramic (Solid) | Traditionally Silicon Nitride - fully insulated | Grey, White, Beige, Blue | High initial cost but longer lifespan when conditions allow. Susceptible to damage. Repels weld spatter. |
| KCF | A special heat treated alloy with a hard, insulating skin | Grey / Black | A low cost pin with a reasonable lifespan |
| SIZE | Code | A | B | L | C | D | E | Q | R |
|---|---|---|---|---|---|---|---|---|---|
| M4 | 4P | 4.8 | 12.0 | 29.0 | 6.5 | 5.5 | 7.5 | 2 | 11.0 |
| M5 | 5P | 5.8 | 12.0 | 30.0 | 8.5 | 7.5 | 6.5 | 2 | 15.0 |
| M6 | 6P | 6.8 | 12.0 | 31.5 | 11.0 | 9.5 | 5.5 | 3 | 23.6 |
| M8 | 8P | 8.8 | 12.0 | 31.0 | 12.0 | 10.5 | 4.0 | 3 | 21.7 |
| M10 | 10P | 10.8 | 16.0 | 34.5 | 14.0 | 12.0 | 5.5 | 4 | 22.3 |
| M12 | 12P | 12.8 | 16.0 | 36.0 | 17.0 | 15.0 | 4.0 | 4 | 27.0 |
| SIZE | CORD NO. | Ød | ØD | Ød1 | L |
|---|---|---|---|---|---|
| M4 | PN-A-4.8 | 4.8 | 12 | 3.1 | 4.0 |
| M5 | PN-A-5.8 | 5.8 | 4.0 | 5.0 | |
| M6 | PN-A-6.8 | 6.8 | 4.8 | 5.5 | |
| M8 | PN-A-8.8 | 8.8 | 6.6 | 6.0 | |
| M10 | PN-A-10.8 | 10.8 | 16 | 8.3 | 8.5 |
| M12 | PN-A-12.8 | 12.8 | 10.3 | 10.0 |
| NUT SIZE | A | B | C | D | E | F | G | L | Q | R |
|---|---|---|---|---|---|---|---|---|---|---|
| M4 | 3.2 | 4-7 | 10 | 5 | 2.0 | 22 | 4 | 31 | 2.5 | 9.0 |
| M5 | 4.1 | 5-8 | 10 | 6 | 2.5 | 22 | 4 | 32 | 3.0 | 13.3 |
| M6 | 4.9 | 6-10 | 10 | 7 | 2.5 | 22 | 3 | 32 | 3.5 | 15.5 |
| M8 | 6.6 | 8-11 | 12 | 8 | 3.0 | 23 | 3 | 34 | 5.0 | 17.5 |
| M10 | 8.5 | 10-13 | 15 | 10 | 3.5 | 24 | 3 | 37 | 7.0 | 30.5 |
| UNIFY | 9.7 | 11-14 | 16 | 12 | 4.0 | 24 | 3 | 39 | 8.0 | 37.5 |
| M12 | 10.4 | 12-15 | 16 | 12 | 4.0 | 24 | 3 | 39 | 9.0 | 41.0 |
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.