FORD ESW-M1A125-B-2002 STEEL 130 000 PSI (896 MPA) YIELD STRENGTH - SAE 4140 TO BE USED WITH FORD WSS-M99P1111-A 《屈服强度为130000 PSI(896 MPA)的SAE 4140钢 与标准FORD WSS-M99P1111-A一起使用 .pdf

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1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 07 31 Revised Updated and renumbered 1979 01 10 Metricated and Retyped CAH2 823385 1964 07 14 Released CR16-113900-52 Printed copies are uncontrolled Page 1 of 2 Copyright 2002, Ford Global Technologies

2、, Inc. STEEL, 130,000 PSI (896 MPa) YIELD STRENGTH SAE 4140 ESW-M1A125-B 1. SCOPE The material defined by this specification is a chromium molybdenum alloy steel, having sufficient carbon content to attain a minimum yield strength of 130,000 psi (896 MPa) following special steel mill treatment. 2. A

3、PPLICATION This specification was released originally for materials used for shafting material in which fatigue resistance is desired and design requirements are within the mechanical strength limitations defined below. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material supp

4、liers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MECHANICAL PROPERTIES (ASTM E 8 and ASTM E 18) 3.2.1 Tensile Strength, min 150,000 psi (1030 MPa) 3.2.2 Yield Strength, min 130,000 psi (896 MPa) 3.2.3 Proof Stress, min 120,000

5、 psi (0.01% Offset - 1-1/2 in (38 mm) (827 MPa) Dia. and Smaller) 3.2.4 Elongation 10 - 20% 3.2.5 Reduction of Area 30 - 45% 3.2.6 Hardness, Rockwell “C“ 32 - 38 ENGINEERING MATERIAL SPECIFICATION ESW-M1A125-B Page 2 of 2 Copyright 2002, Ford Global Technologies, Inc. 3.3 CHEMICAL COMPOSITION Carbon

6、 0.40 - 0.53 Manganese 0.75 - 1.00 Phosphorus 0.04 max Sulphur 0.04 max Silicon 0.20 - 0.35 Chromium 0.80 - 1.10 Molybdenum 0.15 - 0.25 3.4 QUALITY The material shall be free of all internal defects which would adversely affect mechanical properties. Surface defects such as seams, non-metallic inclu

7、sions, voids, pits, and decarburization shall not exceed 0.010 in (0.25 mm) in depth in bars up to 5/8 in (16 mm) diameter inclusive. In bars of greater than 5/8 in (16 mm) diameter, the commercial quality tolerance for depth of the above defect shall be 0.001 in (0.03 mm) per each 1/16 in (1.6 mm) of bar diameter.

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