HFS-03 Lock Standard - saf-holland

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HFS-03 – SAF-HOLLAND Lock Standard Page 4 of 35Rev. K (6/11)1.5 Definitions:1.5.1 Batch or lot - is defined by each unique combination of part number and heatnumber. If the forge shop runs one part from one heat, it is one lot. Twodifferent forgings from the same heat, it is two lots, etc. Similarly, a heat ofthe same forgings is received and inventoried by the plant as one lot (batch).1.5.2 Qualified Non-Destructive Testing Personnel – Persons trained by a thirdparty specializing in the education and examination/testing of persons whowant to work in the field of non-destructive testing (NDT) and non-destructiveevaluation of products. Based on the level of education and the successfulcompletion of examinations by the third party, the NDT personnel will beclassified as Level I, Level II or Level III. For the purposes of this standard,the NDT persons will be qualified in magnetic particle testing and/orultrasonic testing. In addition to the third party outside training, newpersonnel will work with experienced NDT personnel for a period of time tobe established by the facility quality manager or designee.It is SAF-HOLLAND’s intention to have the forging source and its raw material supplierunderstand that the material supplied under this specification is for the manufacturing of locksto be used in fifth wheels used under various weights (GTW) and under various conditions.The lock is part of the primary coupling between the tractor or tow vehicle and the trailer. Thelock and the lock material is therefore to be free of injurious defects as defined by this standard.The requirements of the standard listed below are minimum requirements to achieve materialfree from injurious defects. Additional specifications to achieve this goal may be instituted bythe raw material supplier or forging supplier.2.0 Raw Material Supplier Requirements:2.1 Jominy Reports:2.1.1 All materials used to produce locks are designated as “H” or hardenabilitygrade (ASTM-A-304) materials. Tests shall be conducted in accordance withASTM-A-255 or SAE J406.2.1.2 Jominy reports are required for “H” designated material.2.1.3 Results must fall within the hardenability bands to be acceptable. (Seeattached Appendix F.)2.1.4 Only acceptable material shall be used to produce locks.2.1.5 Copies of the Jominy results for each heat of material shall be included witheach shipment.2.2 Material Cleanliness:One of the methods listed below shall be used to determine material cleanliness:2.2.1 Macro-etch test on raw material:
HFS-03 – SAF-HOLLAND Lock Standard Page 5 of 35Rev. K (6/11)Class2.2.1.1 Three specimens shall be taken in accordance with ASTM-E-381from each heat of steel. When the ingot or slab is made into billets,the first sample shall be taken from the front end of the first billet.The second sample shall be taken from the middle billet or themiddle of the production (heat) run. The last sample shall be takenfrom the end of the last billet.2.2.1.2 All specimens shall be etched and evaluated using ASTM-E-381.All results shall be equal to or better than: C=2, R=2, S=2. Anyresults less than the levels specified or with “unacceptableconditions” as shown on Plate II (upgraded series), are cause forrejection of the heat for use as kingpin material.A written evaluation shall be submitted with the certificationmaterial.2.2.2 Ultrasonic inspection in accordance with MIL-STD-2154:2.2.2.1 Inspection method may be type I or II.2.2.2.2 Class as shown in the following table:ACCEPTANCE CRITERIA: ULTRASONIC CLASSSingleDiscontinuityResponseMultipleDiscontinuitiesLinearDiscontinuityLength andResponseLoss of BackReflectionPercentNotes: 1 2 3 4 5NoiseA Modified 3/64 3/64 1/2 inch - 3/64response50 Alarm levelNotes:1 - Any discontinuity with an indication greater than the response from a reference flatbottomhole or equivalent notch at the estimated discontinuity depth of the size given(inches diameter) is not acceptable.2 - Multiple discontinuities with indications less than the response from a reference flatbottomedhole or equivalent notch at the estimated discontinuity depth of the sizegiven (inches diameter) are not acceptable if the centers of any two of thesediscontinuities are less than 1 inch apart.3 - Any discontinuity longer than the length given with indications greater than theresponse given (flat-bottom hole) is not acceptable.4 - Loss of back reflection greater than the percent given, when compared to nondefectivematerial in a similar or like part, is not acceptable when this loss of backreflection is accompanied by an increase in noise signal (at least double the normal
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HFS-03 Lock Standard - saf-holland

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