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Grade 430 is a ferritic, straight chromium, non-hardenablegrade, combining good corrosion resistance and formability characteristics withuseful mechanical properties. Its ability to resist nitric acid attack permitsits use in specific chemical applications but automotive trim and appliancecomponents represents its largest fields of application.
Grade 430F is the free-machining version of this grade,available in bar form for use in automatic screw machines. Grade 434 is themolybdenum bearing version of Grade 430 and has the same useful combination ofproperties. Its molybdenum addition improves corrosion resistance.
These properties for 430 are specified for flat rolledproduct (plate, sheet and coil) in ASTM A240/A240M. Similar but not necessarilyidentical properties are specified for other products such as forgings and barin their respective specifications. Properties of Grade 430F are specified forbar in ASTM A582.
Typical applications for 430 grade include:
Linings for dish washers
Refrigerator cabinet panels
Stove trim rings
Typical applications for 430F grade include:
Repetition machined components
UNS: ASTM/ASTE S43000
Tensile Strength (MPa) min
Yield Strength 0.2% Proof (MPa) min
Elongation (% in 50mm) min
Rockwell B (HR B) max
Brinell (HB) max
Elastic Modulus (GPa)
Mean Coefficient of Thermal Expansion
Specific Heat 0-100째C (J/kg.K)
Electrical Resistivity (nW.m)