Name: 403 Stainless Steel Bar
SKU: 0

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403 Stainless Steel Bar

403 stainless steel is sorted as a martensitic stainless steel with high chromium and low carbon content. It is also known as UNS S40300 and is commonly used in applications requiring high strength and corrosion resistance.

Email：cong@jsygsteel.com

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product description

403 Stainless Steel Bar Description

403 stainless steel bars are suitable for use in harsh environments given its good corrosion resistance. Additionally, they also have good mechanical properties, including high hardness, toughness and wear resistance. One thing to note is such bars are not as resistant to corrosion as other stainless steels such as 304 or 316 and may not be suitable for use in extremely corrosive environments. The Nickel element enables 403 stainless steel to obtain a complete austenite structure, providing the steel with higher strength, plasticity and toughness, as well as excellent hot and cold workability, cold formability, weldability. Additionally, it improves the thermodynamic stability of 403 stainless steel.

Product Parameters

Product Name		403 Stainless Steel Bar
Type		Steel Bar
Outer Diameter	Round Bar	4mm-500mm
	Hexagon Bar	18mm-57mm (11/16″ to 2-3/4″)
	Square Bar	18mm-47mm (11/16″ to 1-3/4″)
	Flat Steel	1/2 "to 10", Thickness: 2mm-150mm, Can provide customized
Length		1-6 meters, Length can be customized
Standard		ASTM, AISI, JIS, GB, DIN, EN, etc.
Surface		Black, Bright Polished, Rough Turning, Mattness Surface Treatment, No. 4. BA, etc.
Scope of Application		Stainless steel bars are used in a variety of industries such as shipbuilding, Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement, Heavy earthmoving equipment and construction, etc.

Chemical Composition

C	Si	Mn	Cr	Ni	S	P
≤ 0.15	≤ 0.5	≤1.0	11.5～13.0	≥ 0.6	≤ 0.03	≤ 0.04

Mechanical Properties

Tensile Strength Kb (MPa)	Yield Strength σ0.2 (MPa)	Elongation D5 (%)	Hardness
≥485	≥290	≥25	≤ 98HRB

Physical Performance

Density(g/cm³)	Modulus of Elasticity(Gpa)	Coefficient of Thermal Expansion(10-6/°C)	Coefficient of Thermal Conductivity(W/m*K)	Resistivity(10-6 Ω.m)
7.80	190	9.9	21.5	740

Factory Display

Mode Of Transport

FAQ

Q1: Are you a manufacturer or a trading company?
A: We are a professional metal products manufacturer based in Shandong, China, with our own production facilities and a strong supply chain. We specialize in carbon steel and stainless steel products, with over 100,000 tons of stock available year-round.

Q2: Where is your company located? Can I visit your factory?
A: Our company is located in Shandong, China. We welcome customers and partners from all over the world to visit our facilities. Please contact us in advance to arrange a visit.

Q3: What products does your company mainly supply?
A: We mainly supply carbon steel and stainless steel products in various forms, including plates, pipes, coils, bars, structural steel (H-beam, channel steel, angle steel), and customized metal components. We cover a full range of specifications to meet diverse customer needs.

Q4: Do you support OEM or customized orders?
A: Yes. We have years of experience in product customization. We can produce according to your drawings, samples, or specific technical requirements. Please contact us with your customization needs.

Q5: What material grades do you offer?
A: For carbon steel, we offer grades such as A36, S235JR, Q235, Q345, and more. For stainless steel, we offer 304, 304L, 316, 316L, 201, 430, and other common grades. Custom grades are available upon request.

Q6: How do you guarantee product quality?
A: Our factory operates under strict QA/QC standards. Every product is inspected during production and before shipment to ensure it meets agreed quality specifications. We can provide mill test certificates and accept thirdparty inspections upon request.