ASTM-A536:19 pdf free download – Standard Specification for Ductile lron Castings.
14.2 Castings shall not have chilled comas or center chill in areas to be machined.
9. Chemical Requirements
9.1 It is the intent of this specification to subordinate chemical composition to mechanical properties: however, any chemical requirements may he specified by agreement between the manufacturer and the purchaser.
10. Number of itsts and Retrst.
10.1 The number of represetttative coupons poured and tested shall be established by the manufacturer, unless otherwise agreed upon with the purchaser.
102 In the case of the Y-block. the section shall be cut from the block as shown in Fig. 4. If any tension test specimen shows obvious defects, another may be cut from the same test block or 1mm another test block representing the same metal.
11. Tension Tnt Specimen
11,1 Fhc standard round tension test specimen with a 2-in. or 5t)-mm gage length shown in Fig. 5 shall he used. except when the ½-in. (122-mmIY-hlock coupon is used. In this case. either of the test specimens shown in Fig. 6 shall he satisfactory.
12. Responsibility for Inspection
12.1 Unless otherwise specified in the contract 4W purchase onier, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the purchaser. The purchaser reserves the right to perform any of the inspections set forth in the specification where such inspections art deemed necessary to ensure supplies and services conform to prescribed requirements.
13. Identification Marking
13.1 When size permits. each casting shall be identified by the pan or pattern number in raised numerah. Location of marking shall be as shown on the applicable drawing.
14.1 When agreed upon in writing by the purchaser and the seller, a certification shall be made the basis of acceptance of the material. This shall consist of a copy of the manufacturer’s test report or a statement by the seller, accompanied by a copy of the test results, that the material has been sampled. tested, and inspected in accordance with provisions of this specification, Each certification so furnished shall be signed by an authoriied agent ol’ the seller or manufacturer.
15. Preparation for L)elhery
15.1 Unless otherwise specified in the contract or purchase order. cleaning, drying. preservation, and packaging of casting shall be in accordance with manufacturers commercial practice. Packing and marking shall also be adequate to ensure acceptance and safe delivery by the carrier for the mode of transportation employed.
15.2 Government Procwrement- -When specifed in the contract or purchase order, marking for shipment shall be in accordance with the requirements of MIL -STD- 129.