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Phone: +86-577-85858287 丨 Email: sales@bstpsteel.com

>>Ferritic Stainless Steel charateristic Properties and Application

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Characteristic properties

? Moderate to good resistance to uniform corrosion
? Excellent resistance to stress corrosion cracking
? Moderate to good weldability
? Excellent machinability
? Good formability
? Stable price 

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Applications

? Catering and appliances
? Domestic water heaters
? Elevator and indoor claddingsGeneral characteristics
? Tubes
? Storage tanks


Ferritic stainless steels are nickel free materials being used in architecture, building and construction, domestic appliances, kitchenware and automotive exhaust systems. The absence of nickel gives these grades a stable price, making the ferritic grades a more attractive and cost optimized choice. The ferritic offering of Outokumpu is presented in Table 1. Grade 1.4003 is a structural stainless steel with an impact, toughness at low temperatures that is similar to most modern carbon steels and superior compared to other ferritic stainless steel grades. Applications include railroad carriages, bus frames and containers.1.4512(409) is a Ti-stabilized 11Cr ferritic stainless steel grade for elevated temperature applications up to 600 °C. It is widely used in automotive exhaust parts. 1.4016(430) is a general 16Cr ferritic stainless steel, used in catering and appliances and many other indoor applications.1.4510 (439) is another Ti-stabilized grade with chromium content of 17%. This grade is well suited for automotive exhaustsystems and other applications requiring good formability.1.4509 (441) is a Ti and Nb dual-stabilized ferritic grade withimproved weldability and surface appearance. Corrosion resistance is often comparable to that of austenitic grade 4301. It is used in a wide range of applications, such as elevator and indoor claddings, door frames, catering and appliances, tubes and heat exchangers.1.4521(444) is a Ti and Nb dual-stabilized molybdenum alloyed ferritic grade with improved corrosion resistance. The grade is used in water piping, tanks, heat exchangers and domestic water heaters.

Typical chemical compositions (% by wt. )

ENASTMUNSJISCNCrNiMoOthers
1.4003S409770.0211.50.5
1.4512409S40910SUS 4090.0211.50.2Ti
1.4016430S43000SUS 4300.0516.2
1.451439S43035SUS 430LX0.0217Ti
1.4509441S439320.0218Nb Ti
1.4521444S44400SUS 4440.02182Nb Ti


Mechanical Properties at 20℃

Grade Rp0.2RmA80 GradeRp0.2RmA2"
EN No.MpaMpa%ASTM NoMpaMpaA50%
1.400332045020S4097728045018
1.451222038025S4091017038020
1.401628045020S4300020545022
1.45124042023S4303520541522
1.450925043018S4393220541522
1.452132042020S4440027541520


Physical Properties (according to EN 10088-1)

Steel
designation
Density
ρ
kg/dm3
Modulus of
elasticity
E
Gpa
Coefficient of thermal
expansion
between 20°C
and 100°C
10–6/°C
Thermal
conductivity
l
W/m°C
Thermal
capacity
c
J/kg°C
Electrical
resistivity
r
μΩm
Magnetisable
ENRTRT100 °CRTRTRTRT
1.40037.722010.4254300.6YES
1.45127.722010.5254600.6YES
1.40167.722010254600.6YES
1.4517.722010254600.6YES
1.45097.722010254600.6YES
1.45217.722010.4234300.8YES