Technical Info
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Sagwell Copper-Tin Alloy Powder for Diamond Drill Bits
2026-07-30
With the booming infrastructure and construction industry, concrete diamond drill bits are required to deliver superior durability and drilling efficiency. As the core raw material of drill bit matrix, pre-alloy powder directly determines diamond holding force, wear resistance and service life of drill bits. Conventional single metal mixed powder often suffers from component segregation, high sintering temperature and thermal damage to diamond grit. Manufactured by professional factories, copper-tin Alloy Powderhas become the mainstream matrix material for diamond drill bits. Today we recommend Sagwell, a reliable pre-alloy powder manufacturer with 27 years of powder metallurgy experience.
1. Core Performance Requirements of Pre-alloy Powder for Concrete Diamond Drill Bits
Concrete drilling involves continuous impact and abrasion against steel rebar, sandstone and cement. Matrix powder must meet strict standards:
- Low-temperature sintering range: 550-750℃, prevent graphitization of diamond grit and reduce drill bit scrap rate;
- High hardness & bending strength: Finished matrix hardness 85-110HRB, bending strength up to 1100Mpa, anti-crack under heavy drilling impact;
- Homogeneous composition without segregation: Integrated atomization pre-alloy technology ensures uniform Cu & Sn distribution, steady matrix wear and consistent diamond exposure;
- Compatibility with multiple sintering processes: Fit hot pressing & pressureless sintering, mixing ratio 10%-60% for flexible formula adjustment;
- High activity & moldability: Excellent cold pressing performance, minimal edge chipping of green compacts, drastically lower production reject rate of drill segments.
Ordinary mixed copper and tin powder cannot satisfy all above standards simultaneously, while copper-tin pre-alloy powder perfectly matches all production demands of concrete drill bits, ranking as the top choice of alloy powder for diamond drill bits.
2. Sagwell DY Series Copper-Tin Pre-alloy Powder Customized for Concrete Drill Bit Matrix
Sagwell DY series copper-tin pre-alloy powder (CuSn15/DY-15, CuSn20/DY-20, CuSn30/DY-30) is the benchmark pre-alloy powder for concrete drill bits and stone cutting tools, specially developed for diamond drill bit matrix to solve all pain points of concrete drilling:
2.1 Graded Tin Content for Different Hardness Concrete
- DY-15 (15% Tin): D50 particle size 3.5-8.0μm, hardness 85-92HRB, optimal low-temperature sintering performance, ideal for ordinary concrete, ceramic & marble drill bits;
- DY-20 (20% Tin): D50 particle size 7.0-14.0μm, hardness 85-95HRB, balanced sharpness & wear resistance, universal for reinforced concrete drill bits;
- DY-30 (28-31% Tin): D50 particle size 7.0-14.0μm, hardness 105-110HRB, ultra-high hardness, dedicated for high-strength reinforced concrete & heavy-duty drilling.
2.2 Low-temperature Sintering Protects Diamond Grit
The recommended sintering range of DY copper-tin alloy powder is 550-750℃, much lower than common mixed metal powder. It effectively avoids high-temperature carbonization of diamond, improves drilling meterage per drill bit and cuts clients’ consumable costs. Integrated pre-alloy production eliminates layering and tin loss of separate single powders, ensuring stable matrix performance across mass production batches.
2.3 Full Process Compatibility for Complete Concrete Drill Bit Production
This alloy powder for diamond drill bits works well with hot pressing and pressureless sintering. Apart from concrete drill bits, it also fits sawing & drilling tools for granite, marble, ceramic and glass, with flexible mixing ratio from 10% to 60%. Clients can adjust formulas freely based on concrete hardness and drilling speed demand. The powder features high activity and good fluidity, mass-produced on fully automatic production lines with controllable apparent density and particle size consistency.
To boost market competitiveness of finished concrete diamond drill bits, manufacturers must select stable, process-matching copper-tin pre-alloy powder raw material. As a professional pre-alloy powder manufacturer for concrete drill bit matrix, Sagwell DY series alloy powder for diamond drill bits covers all drilling working conditions, featuring low-temperature sintering, high strength, homogeneous composition and reliable supply. We also provide one-stop powder supply plus full technical support.
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