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Technical Library: Forming, Machining & Heat Treatment (page 1)

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  1. A fabrication and erection specification for stainless steel – DD ENV 1090 Part 6

    DD ENV 1090 Part 6 is the new fabrication and erection specification for stainless steel. It covers austenitic and duplex stainless steels used in buildings and other similar steel structures.

  2. Ambient temperature mechanical properties of stainless steels to BS EN 10269

    BS EN 10269 is the material standard for stainless and heat-resisting steels, a selection of low alloy steels and some nickel alloys for fasteners. The ambient temperature mechanical properties shown in this article include 0.2% proof strength, tensile strength, elongation, reduction in area and impact, (Charpy), strength in the finally heat treated condition. Specified hardness levels for the steels for subsequent quenching and tempering, (1.4923, 1.4938 and 1.4913), in their delivery condition are also included.

  3. Chemical composition of stainless steel castings to BS EN 10283

    BS EN 10283 is the material standard for stainless steel castings for corrosion resisting purposes. The chemical composition of stainless steel grades covered in the this standard include, 1.4011, 1.4008, 1.4317, 1.4405, 1.4411, 1.4525, 1.4309, 1.4308, 1.4552, 1.4409, 1.4408, 1.4581, 1.4412, 1.4446, 1.4458, 1.4527, 1.4584, 1.4416, 1.4587, 1.4588, 1.4593, 1.4347, 1.4470, 1.4468, 1.4517, 1.4417, and 1.4469.

  4. Chemical composition of stainless steels to BS 3100

    BS 3100 is the material standard for stainless steel castings for corrosion resisting purposes. The chemical composition of stainless steel grades covered in the this standard include 410C21, 420C28, 420C29, 425C12, 425C11, 302C25, 304C12, 304C15, 347C17, 316C12, 316C16, 317C16, 318C17, 332C11, 332C13, 332C15, 420C24, 452C11, 452C12, 302C35, 309C30, 309C40, 310C45, 311C11, 330C12, 331C60, 334C11, 309C32, 309C35, 310C40, 330C11, 331C40.

  5. Chemical compositions of ACI stainless and heat resisting steel castings grades

    ASTM standards A297, A351, A743, A744 and A890 specify castings for corrosion and heat-resisting service. These include stainless steels and some nickel based alloys. The grade designations used in these standards are those originally developed by the ACI, the Alloy Casting Institute. (Now the Steel Founder’s Society of America). The chemical composition of stainless steel grades covered by these standards include ACI grade designations CA6N, CA6NM, CA15, CA15M, CA28MWV, CA40, CA40F, CB6, CB30, CB7Cu-1, CB7Cu-2, CC50, CD3MCuN, CD3MN, CD3MWCuN, CD4MCu, CD6MN, CE20N, CE3MN, CE30, CE8MN, CF3, CF8, CF8C, CF20, CF3M, CF3MN, CF8M, CF8C, CF10, CF10M, CF10MC, CF10SMnN, CF16F, CF16FA, CG6MMN, CG3M, CG8M, CG12, CH8, CH10, CH20, CK20, CK3MCuN, CK35MN, CN3M, CN3MN, CN7M, CN7MSCT15C, HC, HD, HE, HF, HH, HI, HK, HK30, HK40, HL, HN, HP, HT, HT30, HU, HW, HX. Duplex castings grades 1A, 1B, 1C, 2A, 3A, 4A, 5A, 6A are also listed and cross references to wrought AISI grades 410, 420, 304L, 304, 347, 302, 316L, 316LN, 316, 317, 317L, 309, 310 made. Common grade names are also cross referenced and include 17/4PH, 15/5PH, 2205, Zeron 100, Alloy 958, Escoloy, 254SMO and AL-6XN

  6. Chemical compositions of stainless steels to BS 3146-2

    BS 3146-2 is the material standard for castings, to be made by the investment, (or lost wax), process and includes some stainless steels. The chemical composition of stainless steel grades covered in the this standard include ANC1-A, ANC1-B, ANC1-C, ANC2, ANC3-A, ANC3-B, ANC4-A, ANC4-B, ANC4C, ANC5-A, ANC5-B, ANC5-C, ANC6-A, ANC6-B, ANC6-C, ANC20A, ANC20B and ANC21

  7. Cutting and profiling techniques for stainless steels

    Stainless steel can be cut and profiled in the same way and using the same type of equipment as for most types of steel. The high work hardening rates of austenitic stainless steels means that tool/machinery capability and rigidity requirements are higher than for carbon steels. The techniques for sawing, shearing, plasma cutting, blanking, punching and piercing are discussed.

  8. Effect of austenitic stainless steel composition and heat treatment on cold formability

    The influence of nickel content on deep drawing and stretch forming capability in austenitic grades 304, 305 and 316 are discussed. The affects on magnetic permeability and ‘orange peel’ after forming are mentioned.

  9. Effect of cold work and heat treatment on the magnetic permeability of austenitic stainless steels

    Austenitic stainless steels are generally non-magnetic with relative magnetic permeabilities of around 1.0. Cold working can partially transform the austenitic phase to martensite, leading to higher magnetic permeabilities, for example at sharp corners, sheared edges or machined surfaces. The increase in permeability can be reversed by full solution annealing.

  10. Elevated and sub-zero temperature mechanical properties of stainless steels to BS EN 10269

    BS EN 10269 is the material standard for stainless and heat-resisting steels, a selection of low alloy steels and some nickel alloys for fasteners. The elevated and sub-zero temperature mechanical properties shown in this article include 0.2% proof, tensile and impact, (Charpy), strengths.

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