2016-01-04 09:19:07   Source:   Criticism:0 CTR:

The 15-5PH/S15500 is special steel, and is low temperature of Structural steel in Germany, we can produce 15-5PH/S15500 plate,15-5PH/S15500 flat,15-5PH/S15500 belt,15-5PH/S15500 sheet,15-5PH/S15500 wire coil,15-5PH/S15500 square bar,15-5PH/S15500 round rod,15-5PH/S15500 pipe,15-5PH/S15500 forged valve body,15-5PH/S15500 forged rings, 15-5PH/S15500 forged multidiameter shafts etc for this steel.
Steel Grade  : 15-5PH
Equivalently UNS : S15500
Type : Precipitation-Hardening
C(%)≤ : 0.07
Si(%)≤ : 1
Mn(%)≤ : 1
P(%)≤ : 0.04
S(%)≤ : 0.03
Cr(%)≤ : 14.0~15.5
Ni(%)≤ : 3.50~5.5
Mo(%)≤ :
Other(%) : Cu2.50~4.50Nb0.15~0.45


Introduction Stainless Steel(15-5PH)
Stainless steel is short for acid-proof stainless steel, resistant to weak corrosive medium such as air, steam, water, or with a stainless steel grade is called stainless steel;And resistance to chemical corrosion medium (acid, alkali, salt and other chemical etching) corrosion of steel called acid-resistant steel.Due to the differences in chemical composition and make them both the corrosion resistance of different, ordinary stainless steel is generally not resistant to chemical corrosion medium, and acid is commonly have stainless steel.
Classification of stainless steel(15-5PH)
1, ferritic stainless steel, chromium containing 15% ~ 30%.Its corrosion resistance, toughness and weldability with chromium content increases with the increase of chloride stress corrosion resistance is superior to other types of stainless steel, because of the high chromium content, corrosion resistance and oxidation resistance are relatively good, but the mechanical properties and process performance is poorer, more used to stress less acid structure and steel used as antioxidant.This kind of steel to withstand atmosphere, nitric acid and corrosion of the brine solution, and has good high temperature oxidation resistance, low thermal expansion coefficient, etc, used in nitric acid and food factory equipment, also can make work under high temperature parts, such as gas turbine parts, etc.
2, austenitic stainless steel, chromium is more than 18%, also contains about 8% nickel and small amounts of molybdenum, titanium, nitrogen and other elements.Good comprehensive performance, corrosion resistant to a variety of media.This kind of steel has good plasticity and toughness, weldability and corrosion resistance and non-magnetic or weak magnetic, the corrosion resistance in oxidizing and reducing medium are good, used to make acid equipment, such as corrosion resistant containers and equipment lining, pipelines, nitric acid resistant equipment parts, etc., also can be used as the main body of watches and clocks jewelry stainless steel material.Austenitic stainless steel with solid solution treatment, the steel heating to 1050 ~ 1150 ℃, then water-cooled or air-cooled, for single-phase austenitic organization.
3, austenitic, ferritic duplex stainless steel, the advantages of both austenitic and ferritic stainless steel, and has the superplasticity.Organization in austenite and ferrite accounted for about half of the stainless steel. It has excellent resistance to pitting corrosion performance, is also a kind of nickel and stainless steel.
4, precipitation hardening stainless steel, austenitic or martensitic matrix for organization, its can through the precipitation hardening (also known as the age hardening) dealing with the hard (strong) of stainless steel.
5, martensitic stainless steel, high strength, but the plasticity and poor weldability.Because the higher carbon has high strength, hardness and wear resistance, corrosion resistance is a bit poor, however, higher requirements for mechanical properties, corrosion resistant performance requirements generally over some of the parts, such as spring, turbine blades, hydraulic valves, etc.This kind of steel is used after quenching and tempering treatment.Need annealing after forging, stamping.
Properties of Physical(15-5PH)
1, Density
Carbon steel slightly higher than the density of ferrite and martensite stainless steel body, and slightly lower than that of austenite size stainless steel;
2, Resistivity
Resistivity according to carbon steel, iron, grain size, shape and austenite martensite stainless steel increasing sorting;
3, linear expansion coefficient of the size of the order is similar, minimal austenite size highest stainless steel and carbon steel;
4, carbon steel, iron, grain size and martensite stainless steel magnetic austenite size non-magnetic stainless steel, but its cold hardening generated when martensite phase transformation will produce a magnetic, can be used heat treatment method to eliminate the martensite structure and restore its non-magnetic.
Compared with stainless steel and carbon steel, austenite size has the following features:
1) high resistivity, which is about 5 times of carbon steel.
2) linear expansion coefficient, 40% larger than carbon steel, and with the increase of temperature, the linear expansion coefficient value also correspondingly improved.
3) low thermal conductivity, which is about 1/3 of the carbon steel.
In the field of building applications, the surface of the stainless steel processing is important for many reasons.Corrosion environment requirements of smooth surface because it is not easy to smooth surface fouling.Dirt deposition can cause corrosion rust stainless steel even.
In the spacious hall, the stainless steel is the most commonly used material elevator decorating plate, although on the surface of the hand can be erased, but the impact is beautiful, so it's best to choose a suitable surface to prevent fingerprints.
Health condition is very important for many industries, for example, food processing, food, brewing, and chemical industry, etc., in these applications, the surface must be easy to clean every day, and often want to use chemical cleaning agents.
Stainless steel is the best material, in public places, the surface of the stainless steel and scribbled often, however, one of its important features is they can be washed off, this is a striking feature of stainless steel is better than that of aluminum.The surface of the aluminum easy to leave a mark, it is often difficult to get rid of.Clean stainless steel surface should be along the grain cleaning of stainless steel, because some of the surface processing of grain is unidirectional.
Stainless steel is the most suitable for vital areas of hospitals and other health conditions, such as: food processing, food, brewing, and chemical industry, not only because it is convenient for cleaning every day, sometimes the use of chemical cleaning agents, but also because it is not easy to breed bacteria.Experiment shows that the performance in this aspect is the same as the glass a

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