Precision Cobalt Alloy PRECISION ALLOYS Stamping Mold Conical Punch

Precision Cobalt Alloy PRECISION ALLOYS Stamping Mold Conical Punch

1 PRODUCT

Shape memory alloys (SMA) are materials composed of more than two kinds of metal elements, which have shape memory effect through thermoelasticity, martensitic transformation and inversion. At present, titanium based, copper based and iron-based shape memory alloys have been applied. NiTi shape memory alloy is the most comprehensive and best shape memory material among shape memory materials. It has the characteristics of high strength, high plasticity, good corrosion resistance, good stability and excellent biocompatibility. Its application in medicine is irreplaceable by other shape memory alloys.

Each medical nickel titanium material is nearly Equiatomic percentage of nickel and titanium, complying with ASTM f2063-12 or GB 24627-2009 for surgical implants. All raw materials must be inspected by the third party to ensure the requirements of chemical composition, phase transformation temperature, material uniformity and microstructure. In order to achieve uniform and smooth surface quality, all products use high-precision single crystal or polycrystalline diamond drawing die technology to achieve the diameter of finished wire and pipe. After heat treatment, NiTi material can undergo up to 8% strain at human body temperature without permanent bending.

The chemical composition of nickel titanium material complies with ASTM f2063-12 / GB 24627-2009 (wt%), Ni 54.5-57, C ≤ 0.050, Co ≤ 0.050, Cu ≤ 0.010, Cr ≤ 0.010, H ≤ 0.005, Fe ≤ 0.050, Nb ≤ 0.025, N + O ≤ 0.050, Ti allowance

2 EQUIVALENT DESIGNATION

UNS S13800, XM-13, PH 13-8Mo, ATI 13-8^TM

Precision Cobalt Alloy Stamping Mold Conical Punch

Tic cermet tensile die material, when stretched stamped stainless steel, the service life is more than 4 times that of Kennametal CD750 cemented carbide

Our newly developed TiC base's metal ceramics possess comprehensive properties that can be applied to copper extrusion die and sealing spare parts where ware-resistance and corrosion resistance are required. It can remains high hardness even at red heat, better tenacity and oxidization-resistance. Density is 5.6~6.9g/cm3, hardness is HRC50~70 and bending strength is 700-2000MPa. The properties of wear-resistance are over six times more than the steel ones (3Cr2W8V).

3 OVERVIEW

UNS S13800 is a precipitation hardening martensitic stainless steel that combines excellent strength, good toughness, and good general corrosion resistance. It is a through-hardening alloy, which allows it to be used in parts with large cross sections, where yield strengths in excess of 200 ksi (1380 MPa) may be required. Good transverse toughness properties are achieved by tight chemical composition control (to prevent the formation of delta phase), low carbon content (to minimize grain boundary precipitation), and double vacuum melting (to reduce alloy segregation). Since the rate of cooling from the solution temperature is not critical, large cross sections can be air-cooled.

This alloy is produced by a primary vacuum induct ion melt process (VIM), followed by a consumable vacuum arc remelting (VAR) step. Or followed by electro-slag remelting (ESR). These melt practices promotes excellent macro and micro cleanliness, and tight compositional control. The strengthening mechanism (precipitation hardening in a martensitic matrix) makes it possible to achieve uniform strengthening in heavy sections. Strength and ductility levels can be tailored to the application by varying the aging temperature.

4 APPLICATION

UNS S13800 stainless has been used for valve parts, fittings, cold-headed and machined fasteners, shafts, landing gear parts, pins, lockwashers, aircraft components, nuclear reactor components and petrochemical applications requiring resistance to stress-corrosion cracking. Generally, this alloy should be considered where high strength, toughness, corrosion resistance, and resistance to stress-corrosion cracking are required in a steel showing minimal directionality in properties.

Typical uses of the alloy bar are aircraft parts, rocket engine mounts, nuclear reactor parts, landing gear components, high performance shafts, and petrochemical parts that require high strength combined with good resistance to stress corrosion.

Typical applications of the alloy plate are large airframe structural components, injection molding equipment and slide gates to control water flow.

5 CHEMICAL COMPOSITION (wt%):

6 PHYSICAL PROPERTY

Melting range:2560 - 2680ºF (1405 - 1470ºC)

Density: 0.279 lb/in³ (7.76 g/cm³)

Thermal conductivity 212°F, Condition A: 97.20 BTU-in/hr/ft²/°F

Elastic Modulus: 73°F, Condition H 1000, Longitudinal: 28.3 x 10³ ksi

7 MECHANICAL PROPERTIES

Strength varies with heat treatment condition. The following table shows minimum mechanical properties for the various aged conditions, per AMS 5864. Subsequent figures show typical data

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