NDT & destructive testing for cast materials – standard-compliant and quickly documented.

Cast Part Inspection
Quality Assurance for Castings

NDT & destructive testing for cast materials – standard-compliant and quickly documented.

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  • NDT · UT · RT · MT · PT · VT
  • Destructive Testing Tensile, Hardness, Charpy, Metallography
  • Reliable detection of pores, shrinkage cavities & cracks

Casting

Cast Part Inspection – Overview & Procedures

Graphical overview: Open and closed shrinkage cavities as typical defect patterns in cast parts.

Graphical overview: Open and closed shrinkage cavities as typical defect patterns in cast parts.

We inspect cast materials of all kinds – non-destructively (NDT) and destructively – and provide fast, standards-compliant test reports for your quality assurance. Our personnel is qualified by industry and material for cast products.

NDT Methods for Cast Parts
  • Ultrasonic Testing (UT) – e.g., according to DIN EN 12680‑1/‑2/‑3
  • Radiographic Testing (RT) – according to DIN / ASTM
  • Magnetic Particle Testing (MT) – according to DIN EN 1369
  • Visual Testing (VT) – e.g., DIN EN 1370 (BNIF, SCRATA, MSS SP‑55)
  • Dye Penetrant Testing (PT) – according to DIN EN 1371‑1/‑2
Destructive Tests (Excerpt)
  • Tensile Test – yield strength, tensile strength, elongation at break
  • Hardness Testing – Brinell, Vickers, Rockwell
  • Charpy Impact Test – Charpy
  • Metallography – graphite and microstructure analysis, grain size

Upon completion, you will receive an accredited test report – fast, transparent, and optionally with photo documentation.

FAQ

Frequently Asked Questions

What is Zeros GmbH?

Zeros GmbH is an independent testing laboratory for destructive and non-destructive materials testing. We support companies from incoming inspection to series release – including digital test reports and full traceability.

We operate under accreditation to DIN EN ISO/IEC 17025 (quality management for laboratories). See our current accreditation information here.

Which standards is Zeros accredited to?

We are accredited by DAkkS to DIN EN ISO/IEC 17025. This standard ensures that test methods, equipment control, personnel qualification and reporting meet the highest requirements.

An overview of services and scopes is available on our homepage.

What services does Zeros GmbH offer?

Our portfolio covers NDT (UT, RT, MT, PT, VT), mechanical testing (tensile, hardness, Charpy), metallography (microstructure, grain size, coating thickness) and chemical analysis (e.g. OES, XRF). We also provide specimen preparation, documentation and consulting.

How can I use Zeros services?

Please contact us by email or use the contact option on the website. Share material, standard/specification and quantity – we'll get back to you promptly with a solution.

Below is an overview of the most common defect types in cast parts, their causes, and the suitable inspection methods for detection.

Defect Group Defect Type Causes Detectability
Voids Pores, Gas Bubbles Insufficient drying of mold/core, inadequate deoxidation, high gas contents, insufficient venting UT · RT
Voids Metallic Inclusions Incomplete dissolution of alloying elements or foreign metals MT · RT
Voids Shrinkage Cavities Volume shrinkage during solidification, insufficient feeding, high casting temperature, sharp cross-section transitions UT · RT
Cracks Hot Cracks Intergranular stress/shrinkage cracks during solidification; unfavorable design, sulfur content, too high casting temperature UT · RT · MT · PT · VT
Cracks Cold Cracks After solidification due to restraint/uneven cooling; external stresses UT · RT · MT · PT · VT
Cold Shut Cold Shut (Die Casting: Cold Flow Line) Too low casting/mold temperature, low casting speed/height UT · RT · VT