Uns S31254 Super Duplex Stainless Steel
Uns S31254 Super Duplex Stainless Steel
Uns S31254 Super Duplex Stainless Steel

uns s31254 super duplex

Equivalent Grade: 254SMO/1.4529/EN X1CrNiMoCuN20-18-7/uns S31254
Surface: Bright
Status: Hot-Rolled 、Hard-Drawn 、Solutioned
Tags: 1.4529, 254smo, UNS S31254

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Product Introduction

Products Description

uns s31254 super duplex stainless steel is a type of special stainless steel. First of all, unlike ordinary stainless steel, it is a high-alloy stainless steel containing high nickel, high chromium and high molybdenum. The most well-known one is uns s31254(254SMo) with 6% Mo. Due to high molybdenum content, this stainless steel features very good local corrosion resistance. And, uns s31254 Super Duplex Stainless Steel features good resistance to pitting corrosion (PI ≥ 40) and stress corrosion when used in harsh conditions like seawater, aeration, gap and low speed scouring. Therefore, uns s31254 super duplex stainless steel can be a great substitute to nickel-based alloys and titanium alloys. Secondly, it embodies excellent high-temperature resistance and corrosion resistance, which 304 stainless steel cannot match. In addition, from the classification of stainless steel, the metallographic structure of special stainless steel is a stable austenitic metallurgical structure.

According to the results of a large number of field experiments and extensive experience, uns s31254 steel has high crevice corrosion resistance in seawater, even at slightly higher temperatures. Only a few types of stainless steel embody this property. In acidic solutions and oxidizing halide solutions necessary for paper bleaching, uns s31254 material demonstrates strong corrosion resistance, comparable to that of the most corrosion-resistant nickel-based alloys and titanium alloys.

Equivalent Grade

Standard	UNS	Werkstoff Nr.	EN	SS	AFNOR
254 SMO	S31254	1.4529	X1CrNiMoCuN20-18-7	2378	Z1 CNDU 20.18.06AZ*

Chemical Compositions

The chemical composition of uns s31254 super duplex is outlined in the following table.

Element	Content (%)
Iron, Fe	55.69
Chromium, Cr	20
Nickel, Ni	18
Molybdenum, Mo	6.1
Nitrogen, N	0.20
Carbon, C	0.010

Mechanical Properties

The following table shows mechanical properties of uns s31254 duplex

Properties	Metric	Imperial
Tensile strength	680 MPa	98600 psi
Yield strength	300 MPa	43500 psi
Modulus of elasticity	195 GPa	28300 ksi
Shear modulus	75 GPa	10900 ksi
Poisson's ratio	0.30	0.30
Elongation at break	50 %	50 %
Hardness, Brinell	210	210

uns s31254 duplex stainless steel bars photo

254SMO Stainless Steel

Our Factory Workshops

Steel Making

Ingot Production

Forged Bars

Machinary

Production Process

1.4543 Stainless Steel Round Bar

Quality Control

We make sure that our produced uns s31254 duplex stainless steel bars are made of high quality raw material. We thoroughly test each and every product before dispatching it to our customers.

JIS 1.4828 Chinese Manufacture Stainless Steel Brother Ba