nickel 200 bar, sheet, plate, pipe & wire – uns n02200

431 Stainless Steel Round Bar High Strength & Toughness Steel Bar

High strength and toughness
Better corrosion resistance than 410 and 420
Excellent fatigue resistance
Good performance after heat treatment
Suitable for heavy-duty applications

431 stainless steel round bar is a martensitic stainless steel with enhanced nickel content, offering an excellent combination of high strength, toughness, and corrosion resistance.

Compared to other martensitic grades, 431 provides improved ductility and impact resistance, making it suitable for demanding structural and mechanical applications.

Key Features

- High strength and toughness
- Better corrosion resistance than 410 and 420
- Excellent fatigue resistance
- Good performance after heat treatment
- Suitable for heavy-duty applications

Hengyi Metal supplies high-quality free-machining stainless steel bars for industrial and machining applications.

Email: sales@hengyimetal.com
WhatsApp: +86 19521258704

View more stainless steel products
410 round bar

420 round bar

316L vs 304 guide
316L vs 2205 guide
316L vs 17-4PH

Chemical Composition (Typical)

Element	Content (%)
Carbon (C)	0.12 – 0.20
Chromium (Cr)	15.0 – 17.0
Nickel (Ni)	1.25 – 2.50
Manganese (Mn)	≤ 1.00
Silicon (Si)	≤ 1.00

Nickel improves toughness and corrosion resistance.

Applications

431 stainless steel round bars are widely used in:

Shafts and axles
Marine fasteners
Aircraft components
Pump and valve parts
High-load mechanical components

Grade

200 series: 201,202,202Cu,204Cu,
300 series: 301,303/Cu,304/L/H,304Cu,305,309/S,310/S,316/L/H/Ti,321/H,347/H,330,
400 series: 409/L,410,416/F,420/F,430,431,440C,441,444,446,
600 series: 13-8ph,15-5ph,17-4ph,17-7ph(630,631),660A/B/C/D,
Duplex: 2205(UNS S31803/S32205),2507(UNS S32750),UNS S32760,2304,LDX2101.LDX2404,LDX4404,904L,
Others: 153Ma,254SMo,253Ma,654SMo,F15,Invar36,1J22,N4,N6,etcAlloy: Alloy 20/28/31;
Hastelloy: Hastelloy B / B-2/B-3/C22/C-4/S/ C276/C-2000/G-35/G-30/X/N;
Haynes: Haynes 230/556/188;
Inconel: Inconel 100/600/601/602CA/617/625713/718738/X-750,Carpenter 20;
Incoloy: Incoloy 800/800H/800HT/825/925/926;
GH: GH2132,GH3030,GH3039,GH3128,GH4180,GH3044;
Monel: Monel 400/K500;
Nitronic: Nitronic 40/50/60;
Nimonic: Nimonic 75/80A/90;
Nickle: Nickle 200/201.