Stainless Steel 431 Round Bars and Rods

Anucha Metals, a well-respected manufacturer and supplier based in Bangkok, Thailand, is dedicated to delivering top-notch Stainless Steel 431 Round Bars and Rods that cater to the needs of both local and global industries. Renowned for their exceptional toughness, strength, and resistance to corrosion, these bars and rods are crafted with precision and adhere to international quality standards. Stainless Steel 431 Round Bars and Rods are highly sought after in applications that demand outstanding mechanical performance and durability. Anucha Metals serves a variety of sectors, including marine, aerospace, oil & gas, and engineering, providing reliable stainless steel solutions.

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Stainless Steel 431 Round Bars

Stainless Steel 431 Hex Bars

SS Round Bar 431 Cold Finish

What is 431 Stainless Steel Round Bars and Rods?

These Stainless Steel 431 Round Bars and Rods are martensitic stainless steels, featuring a composition of 15–17% chromium, 1.25–2.50% nickel, and 0.12–0.20% carbon. This blend strikes a remarkable balance between strength, toughness, and moderate corrosion resistance. In terms of mechanical properties, they boast a tensile strength ranging from 850 to 1000 MPa, a yield strength of about 600 MPa, and impressive hardness when heat-treated. The alloy is known for its excellent impact resistance and dimensional stability, making it ideal for demanding applications where strength and resistance to stress corrosion cracking are essential.

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431 Stainless Steel Round Bars and Rods Specifications

Stainless Steel Round Bar Specification : ASTM A276 / A479, ASME SA276 / A479
Dimension Standard : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 14mm-300mm
Thickness : 50 mm to 6000 mm Long
Length : 1 To 6 Meters, Custom Cut Length
Form : Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc.

Chemical Compositions of 431 Stainless Steel Round Bars and Rods

431	Max	Min
C	0.20	–
Cr	17.00	15.00
Fe	Balance	–
Mn	1.00	–
Ni	2.50	1.25
P	0.040	–
S	0.030	–
Si	1.00	–

431 Stainless Steel Round Bars and Rods Mechanical Properties

Typical Mechanical Properties at Elevated Temperatures, Hardened at 1010oC and Tempered at 30oC Above Working Temperature
Tempering Temperature oC		510	570	620
Working Temperature oC		480	540	590
Tensile Strengt Mpa		1350	720	435
Elongation in 50mm %		15	20	26
Room Temperature Hardness after Test	HB	440	330	280
	Rc	47	37	30

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Equivalent Table of SS 431 Round Bars and Rods

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
Grade	UNS No	BS	En	No	Name	Swedish SS	Japanese JIS
431	S43100	431S29	57	1.4057	X17CrNi16-2	2321	SUS 431

Physical Properties of 431 Stainless Steel Round Bar

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 (J/kg.K)	Electrical Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	at 100°C	at 500°C
431	7800	200	10.2	12.1	–	20.2	–	460	720

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431 SS Round Bars and Rods Types

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Frequently Asked Questions (FAQ)

Can Stainless Steel 431 Round Bars/Rod Be Used At High Temperatures?

Yes, Stainless Steel 431 Round Bars/Rods can be used at high temperatures, offering good oxidation and scaling resistance up to 600°F (316°C), making them suitable for moderate temperature applications.

Can Stainless Steel 431 Round Bars/Rod Be Recycled After Use?

Yes, Stainless Steel 431 Round Bars/Rods are fully recyclable. Being a type of stainless steel, they can be melted down and repurposed without losing their inherent properties, contributing to sustainability.

Can Stainless Steel 431 Round Bars/Rod Be Welded?

Yes, Stainless Steel 431 Round Bars/Rods can be welded, although preheating and post-weld heat treatment are recommended to prevent cracking and maintain the material's mechanical properties.

431 Stainless Steel Round Bars and Rods Uses

Stainless Steel 431 Round Bars and Rods find extensive use in marine equipment, propeller shafts, and pump components due to their ability to withstand seawater and stress corrosion. In the aerospace sector, they are utilized for fasteners, fittings, and aircraft components that require both toughness and strength. The oil & gas industry relies on them for valves, drilling equipment, and shafts that operate under challenging conditions. Additionally, they are commonly used in automotive, chemical processing, and general engineering for gears, bolts, and machinery parts. With their high performance and durability, Stainless Steel 431 Round Bars and Rods are a dependable choice for critical applications.

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Stainless Steel 431 Round Bars and Rods