Experienced supplier of SS 430 sheet,430 stainless steel,SUS430

Sunny Xinrui Steel Group Co.,Ltd

Home > Products > Stainless Steel > 430

430

Stainless Steel Sheet 430

Stainless steel grade 430 is a non-hardenable steel containing straight chromium, and belongs to the ferritic group of steels. This steel is known for its good corrosion resistance and formability, coupled with practical mechanical properties. It can be used in certain chemical applications due to its resistance to nitric acid.
Grade 430F stainless steel is usually provided in bar form to be used in automatic screw machines.
Grade 434 has similar properties as grade 430, although it is a molybdenum-bearing version. The molybdenum content enhances its corrosion resistance.

Composition

The chemical compositions of various elements of grade 430 stainless steels are tabulated below.

Table 1 – Chemical compositions of grade 430 stainless steels

GradeN		C	Mn	Si	P	S	Cr	Mo	Ni
430	min.						16
430	max.	0.12	1	1	0.04	0.03	18		0.5
430F	min.					0.15	16
430F	max.	0.12	1.25	1	0.06		18

Mechanical Properties

The mechanical properties for grade 430 stainless steels are listed in the table below.

Table 2 - Mechanical properties of grade 430 stainless steels

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell B (HR B) max	Brinell (HB) max
430	483	310	22	85	183
430F	552 typical	379 typical	25 typical		262

Physical Properties

The following table outlines the physical properties of grade 430 stainless steels.

Table 3 - Physical properties of grade 430 stainless steels in the annealed condition

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (μm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C	Electrical Resistivity (nΩ.m)
Grade	Density (kg/m3)	Elastic Modulus (GPa)	0-100℃	0-315℃	0-538℃	at 100℃	at 500℃	(J/kg.K)	Electrical Resistivity (nΩ.m)
430	7750	200	10.4	11	11.4	26.1	26.3	460	600
430F	7750	200	10.4	11	11.4	26.1	26.3	460	600

Grade Specification Comparison

A comparison of grade specifications for 430 stainless steels is given in the following table.

Table 4 - Grade specifications for 430 stainless steels

Grade	UNS No	Old British		Euronorm		Swedish	SS Japanese JIS
Grade	UNS No	BS	En	No.	Name	Swedish	SS Japanese JIS
430	S43000	430S17	60	1.4016	X8Cr17	2320	SUS 430
430F	S43020			1.4104	X12CrMoS17	2383	SUS 430F

Corrosion and oxidation resistance
Sunny Xinrui Steel Type 430 has excellent corrosion resistance, including high resistance to nitric acid as well as to sulfur gases and many organic and food acids. This alloy does not provide the resistance to pitting by dilute reducing acids that is provided by the chromium-nickel stainless steels.
Because of its relatively high chromium content, the material provides good resistance to oxidation. Its maximum scaling temperature is 1500°F (816°C) for continuous service.

Weldability
The ferritic class of stainless steels is generally considered to be weldable by the common fusion and resistance techniques. Special consideration is required to avoid brittle weld fractures during fabrication by minimizing discontinuities, maintaining low weld heat input, and occasionally warming the part somewhat before forming. This particular alloy is generally considered to have poorer weldability than the most common alloy of the stainless class, Type 409. Major differences are the higher carbon content and the lack of stabilizing elements for this alloy which require post weld annealing to restore optimum corrosion and forming characteristics. When a weld filler is needed, AWS E/ER 308L and 430
are most often specified. Type 430 is well known in reference literature and more information can be obtained in this way

Formability
Type 430 is readily drawn and formed. Its drawing characteristics are similar to those of low-carbon steel, although it is stronger in the annealed condition and will require stronger tooling and increased power. It is also adaptable to most hot-forming operations.

Products