Corrosion resistant Alloy 40 (UNS S21900) pipe, strip, bar, wire, forging etc for chemical process equipment

1 PRODUCT
Corrosion resistant Alloy 40 (UNS S21900, UNS S21904) pipe, strip, bar, wire, forging etc for chemical process equipment
Alloy 40 is available in the following standard semi-finished forms:
Sheet and plate: Hot or cold rolled, heat treated, descaled or pickled
Strip: Cold rolled, heat treated, pickled or bright annealed
Rod: Forged, rolled, drawn, heat treated, oxidized, descaled or pickled, turned, peeled, ground or polished
Wire: Drawn bright, ¼ hard to hard, bright annealed in rings, containers, on spools and headstocks
Others: Other shapes and dimensions such as discs, rings, extrusion, shapes, seamless or welded pipes and forgings can be requested

2 EQUIVALENT DESIGNATION
UNS S21900, UNS S21904, XM-10, XM-11, Cr21Ni6Mn9, W.Nr. 1.3965, Nitronic® 40

3 APPLICATION
Aircraft engine components, chemical process equipment, pollution control equipment, ducting, bellows. Application where low magnetic permeability is required even after severe cold work.
Aerospace components, clamps, flanges, hydraulic tubing, cryogenic use

4 OVERVIEW
Alloy 40 is a versatile austenitic stainless steel that combines high yield strength with good corrosion resistance. Retains high strength and toughness even at sub-zero temperature.
High manganese and nitrogen strengthening result in a combination of high temperature oxidation resistance, excellent toughness at cryogenic temperatures and above average corrosion properties. Maximum temperature for continuous service is less than 1600°F (871°C). This alloy retains excellent toughness down to -423°F(-230°C).

5 CHEMICAL COMPOSITION

6 PHYSICAL PROPERTIES
Density at 70°F (21°C): 7.83 g/cm³ (0.283lb/in³)
Magnetic permeability: H = 200 Oersteds:
Annealed: 1.004
15% Cold Reduction: 1.003
35% Cold Reduction: 1.005
60% Cold Reduction: 1.012
Thermal conductivity

7 MECHANICAL PROPERTIES
Annealed typical properties
Ultimate Tensile Strength: 112 KSI (772 MPa)
Yield Strength: 68 Ksi (469 MPa)
Elongation: 44%
Hardness: Rb 96

8 CORROSION RESISTANCE
Refer to NACE (National Association of Corrosion Engineers) for recommendations

9 WORKING INSTRUCTION
Forging
Heat to 2000°F, soak to equalize, then heat to 2150°F and equalize prior to forging.
Annealing
Soak at 1900-2050°F, quench quickly in air or water.
Hardening
Hardening this alloy requires cold working. It will not harden with exposure to thermal treatment.
Machinability
Slow speeds, positive feeds and abundant resulphurized lubricant are essential to success in machining this alloy. Speeds and feeds similar to those employed with 316 or 317 stainless are appropriate here. All common machining practices can be used on this material. Chips will be tough and stringy and it is recommended that curlers or breakers are used.

10 STANDARD SPECIFICATION
ASTM A276 (XM-10, XM-11) Bars and Shapes
ASTM A314 (XM-10, XM-11) Steel Billets and Bars for Forging
ASTM A412 (XM-10, XM-11) Plate, Sheet And Strip
ASTM A473 (XM-10, XM-11) Stainless steel forgings
ASTM A479 / ASME SA479 (XM-10, XM-11) Bars and Shapes
ASTM A580(XM-10, XM-11) Stainless steel wire
AMS 5575 Welded Tubing
AMS 5656 Bars, Wire, Forgings, Extrusions, And Rings
AMS 5595 Sheet, Strip, and Plate
AMS 5561 Welded and Drawn or Seamless and Drawn Tubing
AMS 5562 Seamless Tubing

11 COMPETITIVE ADVANTAGE
(1) More than 50 years experience of research and develop in high temperature alloy, corrosion resistance alloy, precision alloy, refractory alloy, rare metal and precious metal material and products.
(2) 6 state key laboratories and calibration center.
(3) Patented and innovative technologies.
(4) Ultra-purity smelting process VIM + IG-ESR + VAR.
(5) High performance.

12 BUSINESS TERM

With background of more than 50 years of material R&D experience, CMMC is a high-tech enterprise specialized in production of high temperature alloys, corrosion resistant alloys, precision alloys, wear resistant alloys, refractory alloys and other special alloys.

With main smelting equipments by CONSARC, including vacuum induction melting furnace (VIM 3 metric tons x 1 set), inert gas protective electric slag remelting furnace (IG-ESR 5 metric tons x 1 set, 10 metric tons x 2 sets), vacuum arc remelting furnace (VAR 10 metric tons x 1 set), CMMC has an annual production capacity of 3000 metric tons.

Established in 2016, CMMC stll having an investing plan of more than 30 million U.S.Dollars in the coming 5 years. CMMC aspires to become an internationally renowned supplier and leading brand of key materials for core components of high-end equipments in the application fields of aerospace, clean energy, petroleum, chemical engineering, medical, marine engineering, food and automobile, etc.

Our main products include forgings, bars, rods, tubulars, plates, sheets, strips, wire rods, precision wires, etc.

From ultra-pure smelting,  hot and cold forming, heat treatment, mechanical processing to finish machining, CMMC provides the whole process of one-stop professional services.

From demand idea to research and development, from technology innovation to promoting of products upgrading, from customer's puzzles and difficulties to final solution, from smelting to market, no matter wherever, whenever, whatever and however, CMMC always try to provide satisfactory one-stop service.

By providing better materials to make a better world, CMMC never give up the dream.