Having researched, bought and trained to work with the various technically sound equipments for carrying out quality tests, we have managed to assure delivery of top-end products to the clients. Some of the machines at our plant that carry out quality checks are:
4140 / EN19 / 42CrMo4 Bars – Test Process Chart
| Test Name | Purpose | Standard/Method | Stage |
|---|---|---|---|
| Chemical Composition Analysis | Verifies material grade and alloy content | ASTM E415 / Optical Emission | Raw Material |
| Ultrasonic Testing (UT) | Detects internal flaws or voids | ASTM A388 | After Forging/Rolling |
| Hardness Testing | Measures surface hardness | ASTM E18 (Rockwell) / Brinell | Final Product |
| Tensile Test | Determines tensile strength, yield, and elongation | ASTM A370 | After Heat Treatment |
| Impact Test (Charpy V-Notch) | Measures toughness at room or sub-zero temperatures | ASTM E23 | On Request / Critical Apps |
| Microstructure Examination | Evaluates grain structure, inclusion, and phase distribution | ASTM E112 | After Heat Treatment |
| Magnetic Particle Inspection (MPI) | Detects surface and near-surface cracks in ferromagnetic materials | ASTM E709 | Post Machining |
| Dimensional Inspection | Verifies size, tolerance, and straightness | As per client specs | Final QC |
| Surface Finish Inspection | Checks for scale, rust, cracks, and finish quality | Visual / Manual | Final QC |
| Heat Treatment Report | Confirms process parameters: temperature, duration, cooling medium | Internal Record / Cert | Post HT |
| Third-Party Inspection (Optional) | Ensures compliance by external certifying agencies like BV, SGS, TUV, etc. | Client-Specified | Final Dispatch |
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Ultrasonic Testing (UT)
Hardness Testing
Surface Finish Inspection
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Impact Test (Charpy V-Notch)
Heat Treatment Report
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Magnetic Particle Inspection (MPI)
Dimensional Inspection
Microstructure Examination
Tensile Test