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AL 29-4C

2019-06-11 17:16:32
We are a professional manufacturer of AL 29-4C, we can provide the third party inspection report and datasheet of AL 29-4C as round bar, square bar, flat steel and so on. Please send the inquiry to us if you are if you are interested in AL 29-4C. We will serve you with honesty, integrity, and professional. The detail data as below follow:
Steel Grade: AL 29-4C| S44735|Type Ferrite
CHEMICAL COMPOSITION(AL 29-4C): 
C(%) :        0.03
Si(%) :        1.00
Mn(%) :         1.00
P(%)≤:        0.04
S(%)≤:         0.03
Cr(%) :         28.0~30.0
Ni(%) :        1
Mo(%) :         3.60~4.20
Other(%) :        Ti+Nb0.20~1.00(Ti+Nb)≥6×(C+N)%N0.045
Remark(AL 29-4C): 
①, Commerce steel grade/ASTM, the steel grade in parentheses is for UNS system.
②, B─Bar;F─forging;P─Thick plate;Sh─Sheet;St─Strip;Pi,T─Pipe steel;S-Pi,T─Seamless Pipe steel; W-T─Welded Pipe;Sp─Shape;W─wire.
③, The high value is lengthways, the low value is crosswise.
④, It is apply to any thinkness and diameter.
⑤, The high value is apply to lower than 75mm, the low value is apply to from 75mm to 200mm.
⑥, The the size is low than 13mm, the σb is 860~1140MPa.
⑦, The σb just apply to lower than 13mm.
⑧, It is apply to lower than 150mm.
⑨, It is crosswise performance.
⑩, H850->455℃x1h, air cold. H900->480℃x1h, air cold. H925->495℃x4h, air cold. H950->510℃x4h, air cold. H1000->540℃x4h, air cold. H1025->550℃x4h, air cold. H1050->565℃x4h, air cold. H1075->580℃x4h, air cold. H1100->595℃x4h, air cold. H1150->620℃x4h, air cold. H1150M->760℃x2h, air cold, then 620℃x4h, air cold. TH1050->760℃x9min, cool to 15±3℃, then heat to 565℃ in one hour, keep 30min to 90min, air cold. RH950->955℃, 10min to 1h, fast cold to room temperature, then hart to 750℃ in 24h, keep 8h, cold to roo temperature, then hart to 510℃x1h, air cold.


Introduction Stainless Steel (AL 29-4C)
Stainless steel refers to corrosion resistant steel, such as air, steam, water and other medium corrosion medium, acid, alkali, salt and other chemical etching medium, also known as rust resistant and acid resistant steel. In practical applications, the steel that corroded the weak corrosion medium is often called stainless steel, and the steel which is resistant to chemical medium is called acid resistant steel. Because of the difference in chemical composition, the former is not corroded by chemical medium, and the latter is generally rusty. The corrosion resistance of stainless steel depends on the alloy elements contained in the steel.
Stainless steel does not readily corrode, rust or stain with water as ordinary steel does. However, it is not fully stain-proof in low-oxygen, high-salinity, or poor air-circulation environments. Stainless steel differs from carbon steel by the amount of chromium present. Unprotected carbon steel rusts readily when exposed to air and moisture. This iron oxide film (the rust) is active and accelerates corrosion by making it easier for more iron oxide to form. Since iron oxide has lower density than steel, the film expands and tends to flake and fall away. In comparison, stainless steels contain sufficient chromium to undergo passivation, forming an inert film of chromium oxide on the surface. This layer prevents further corrosion by blocking oxygen diffusion to the steel surface and stops corrosion from spreading into the bulk of the metal. Passivation occurs only if the proportion of chromium is high enough and oxygen is present in it.
Application(AL 29-4C)
Stainless steel is notable for its corrosion resistance, and it is widely used for food handling and cutlery among many other applications.

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ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13, AL 29-4C

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