2015-02-09 13:45:35 Origin： Remark：0 Click：
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: Precipitation hardening
MATERIAL SPECIFICATIONS: DIN EN 10088-1
The alloy is usually produced by AOD / VOD /VIM followed by electroslag refining (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied black/bright in the annealed condition.
Final heat treatment - solution treatment / QT
CHEMICAL COMPOSITION (WEIGHT %) - FV520B
C (％): ≤ 0.07
Si (％): ≤ 0.70
Mn (％): ≤ 1.00
P (％)≤: 0.035
S (％)≤: 0.025
Cr (％): 13.0 ~ 15.0
Ni (％): 5.00 ~ 6.50
Mo (％): 1.20 ~ 2.00
Other (％): Cu 1.20 ~ 2.00, Nb 0.15 ~ 0.60
Form: Round bar
Condition: double overaged,1050º C +2 hours 750-850 ºC,+2 hours 750-850 ºC
Proof stress (N/mm²): 800
Tensile strength, σb/MPa: 925 ~ 1035
Yield strength, σ0.2/MPa: 275
EL, δ (％): 15.0
Hardness | HB: 277~341
HEAT TREATMENT PRACTICE
Heat treatment is only suitable for specific grades of stainless steel. When heat treating a stainless the hardening temperatures, including rate of heating, cooling and soaking times will vary due to several factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult with the heat treatment provider for whole guidance on heat treatment of stainless steel grades. We are delighted to help to work with you the special heat treatment based on your special requirements.
Mechanical parts used in the condition of corrosion resistance
Bolt and nut
Round bar / Wire rod (Diameter): 0.50mm to 650mm
Square bar / Flat bar: 3mm to 2000mm
Plate / Sheet steel / Steel strip: 0.1mm to 2500mm,Width: 8mm to 2500mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Pipes / Tubings: OD 3-219 mm, with wall thickness ranging from 0.50 to 35 mm.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
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