Sinker EDM Solutions for Critical Precision
AXALLOY engineers high-accuracy sinker electrical discharge machining (RAM EDM) for complex cavities, narrow ribs, and micro-features in hardened superalloys, refractory metals, and mission-critical components.
Engineered Performance
Advanced Cavity Machining for Challenging Geometry
When mechanical milling reaches geometric boundaries, sinker EDM delivers contact-free spark erosion capable of producing sharp internal radii, blind slots, and non-circular splines in tough conductive metals.
Complex Blind Pockets
Zero cutting forces allow sub-millimeter deep ribs, internal spline teeth, and intricate mould cavities without tool deflection or stress deformation.
High-Temperature Superalloys
Specialized in eroding Inconel 718/625, Hastelloy, Waspaloy, Titanium Grade 5, and Tungsten Carbide without rapid tool wear or thermal degradation.
Micro-Finish & White Layer Control
State-of-the-art generator discharge parameters minimize the recast layer, eliminating micro-cracking for critical aerospace and medical hardware.
Sinker EDM Capabilities Timeline
Explore specialized sinker EDM engineering guides, alloy performance reports, and design recommendations compiled by AXALLOY technical specialists.

Sinker EDM Services for Difficult Alloys
Sinker EDM Services by AXALLOY for difficult alloys, with ±0.005 mm accuracy and Ra 0.4 μm finishes. Wire EDM, deep cavities and precision inserts. Get a quote.
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Complex Cavity EDM | AXALLOY Precision
AXALLOY Precision delivers complex cavity EDM for difficult alloys. Sinker EDM and Wire EDM for deep ribs, blind features, sharp internal corners and precision profiles with tight tolerances, reliable documentation and i
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EDM for Difficult Alloys with ±0.005 mm Precision
AXALLOY provides EDM for difficult alloys with Wire and Sinker EDM integrated with multi-axis CNC. ±0.005 mm accuracy and strict documentation. Get a quote.
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Precision EDM Components | AXALLOY Precision
Precision EDM components in difficult alloys. Wire EDM and sinker EDM for tight tolerances, sharp internal features and burr-free edges. Full inspection and documentation for aerospace, medical, semiconductor and industr
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Sinker EDM Inconel: ±0.005 mm, Ra 0.4 μm
Sinker EDM Inconel by AXALLOY: deep cavities, R0.05 mm corners, ±0.005 mm accuracy and Ra 0.4 μm on nickel alloys and titanium. Get a quote.
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Sinker EDM Titanium | AXALLOY Precision CNC Machining
Sinker EDM for titanium alloys from AXALLOY Precision. Precision machining with ±0.005mm accuracy, Ra 0.4μm finish, 500x350x300mm parts, and complex cavities. Shenzhen CNC partner for prototypes to production in titanium
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Submit Component DrawingQuality & Traceability
Strict Metrology for High-Integrity Alloys
Every sinker EDM operation undergoes comprehensive dimensional inspection with coordinate measuring machines (CMM), surface roughness profilometers, and optical micro-scanners to ensure compliance with AS9100 and ISO standards.
Supported Materials in Sinker EDM
Electrode tooling fabricated in-house via ultra-precision graphite and copper high-speed CNC milling ensures accurate spark gap geometry.
Direct Inquiry
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Submit your specifications below. Our EDM engineering team reviews all CAD drawings (STEP, IGES, DXF) under non-disclosure agreements within 24 hours.
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