JOTAIN MATERIALS
DECARBURIZATION — PURCHASE AND INSPECTION CHECKLIST

Project / order:
Component / application:
Prepared by / date / revision:

1. MATERIAL
Grade and product standard / edition:
Incoming size and tolerance:
Delivery condition:
Steel heat and treatment-lot identification:

2. SURFACE AND PROCESSING STAGE
Surface to be accepted (as rolled, descaled, peeled, ground, heat treated,
or finished component):
Material removed before sampling:
Subsequent machining:
Subsequent thermal treatment:
Final acceptance stage:

3. PROPERTY AND METHOD
Required depth: complete / total / depth to specified hardness:
Test standard and edition:
Endpoint criterion:
Acceptance limit and units:
Reporting rule: maximum / other agreed statistic:

4. SAMPLING
Lot definition:
Number of bars / specimens:
Axial position and distance from end:
Circumferential positions:
Section orientation:
Identification of any atypical or local region:

5. METALLOGRAPHY
Cutting, mounting and edge-retention procedure:
Polished and etched condition:
Etchant:
Calibration / scale bars:
Positions and individual depth readings:

6. HARDNESS TRAVERSE, WHEN SPECIFIED
Method / designation:
Force and dwell:
Edge distance and indent spacing:
Position of every reading:
Individual values:
Reference interior / hardness threshold:
Depth criterion and result:

7. MACHINING ALLOWANCE
Incoming minimum local size:
Finished maximum size:
Radial removal:
Maximum relevant affected depth:
Allowance for form, centring and finishing variation:
Operation after which cleanup is checked:

8. DOCUMENTS AND DISPOSITION
Marked specimen map:
Original micrographs with scales:
Raw measurement table and hardness plot:
Connection to heat and treatment lot:
Retest / referee procedure:
Segregation and rework approval:
Reinspection stage:
Buyer / supplier agreement:

Complete the applicable fields against the governing product specification,
drawing and agreed test method before manufacture and inspection.