{"id":5294,"date":"2026-09-21T10:49:51","date_gmt":"2026-09-21T02:49:51","guid":{"rendered":"https:\/\/jblstainless.com\/?post_type=product&p=5294"},"modified":"2026-09-21T10:49:52","modified_gmt":"2026-09-21T02:49:52","slug":"alloy-254smo-ws-1-4547-uns-s31250-stainless-steel","status":"publish","type":"product","link":"https:\/\/jblstainless.com\/am\/alloy-254smo-ws-1-4547-uns-s31250-stainless-steel\/","title":{"rendered":"Alloy 254SMO WS 1.4547 UNS S31250 Stainless Steel"},"content":{"rendered":"
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The overall corrosion resistance of 254SMO falls between that of ordinary stainless steel and nickel-based alloys, making it a highly cost-effective metal material. Its domestic equivalent is 00Cr20Ni18Mo6CuN.<\/p>

This Stainless Steel Grade 254 SMO<\/span> highly corrosion-resistant super austenitic stainless steel was developed for environments involving halides and acids; it is widely used in demanding conditions such as media with high chloride ion concentrations and seawater. In various industrial applications involving acidic media\u2014particularly acids containing halides\u2014 Alloy 254SMO WS 1.4547 UNS S31250 Stainless Steel<\/span> significantly outperforms other stainless steels, and in some instances, its performance rivals that of Hastelloy and titanium alloys.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Performance Characteristics—-Alloy 254 Stainless Steel<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Corrosion resistance<\/span><\/p>

High levels of elements such as molybdenum, chromium, and nitrogen provide excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in environments such as seawater, media with high chloride ion concentrations, and acidic solutions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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High strength<\/span><\/p>

Possesses high strength and hardness, capable of withstanding significant mechanical loads.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Processability<\/span><\/p>

Can be formed and processed by conventional metal processing techniques, such as forging, rolling, cutting, etc.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Weldability<\/span><\/p>

It can be welded using various techniques and retains good properties after welding.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Chemical Composition—-STAINLESS STEEL 254SMo<\/span>
C: \u22640.02;
Si: \u22640.7;
Mn: \u22641;
P: \u22640.03;
S: \u22640.01;
Cr: 19.5\u201320.5;
Ni: 17.5\u201318.5;
Cu: 0.5\u20131;
Mo: 6\u20137;
N: 0.18\u20130.25;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Physical Properties—-254SMO<\/span><\/p>

Density: 8.24 g\/cm\u00b3<\/p>

Melting Point: 1320\u20131390\u00b0C<\/p>

Coefficient of Thermal Expansion: 15.7 \u03bcm\/m\/\u00b0C (100\u00b0C to 300\u00b0C)<\/p>

Thermal Conductivity: 14.5 W\/m\u00b7\u00b0C (20\u00b0C)<\/p>

Specific Heat Capacity: 500 J\/kg\u00b7K<\/p>

Mechanical Properties<\/p>

Yield Strength: \u2265310 MPa<\/p>

Tensile Strength: \u2265650 MPa<\/p>

Elongation: \u226535%<\/p>

Hardness: \u2264210 HB<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Study on Crevice Corrosion Behavior of 254 SMO Super Stainless Steel in a Simulated Flue Gas Desulfurization Environment.<\/span><\/p>

Due to its high content of Cr, Mo, Ni, and N, 254SMo exhibits strong resistance to pitting and crevice corrosion, making it suitable for acidic, chloride-containing environments such as flue gas desulfurization units.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Use Cases \/ Target Customers<\/span><\/strong><\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Environmental Waste Gas Treatment Project<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Petrochemical refining equipment<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Pharmaceutical and Bio-fermentation Workshop<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Pulp and Paper Bleaching Section<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Pulp and Paper Bleaching Section<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Seawater Desalination and Coastal Power Plants<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Alloy 254SMO WS 1.4547 UNS S31250 Stainless Steel<\/p>\n

254SMO is a grade of stainless steel;
\nUNS S31254 is its international designation;<\/span>
\nGerman standard designation: W.-Nr. 1.4547;<\/span>
\nForging grade: F44;<\/span>
\nCommonly known as: 6Mo steel.<\/span><\/p>","protected":false},"featured_media":5337,"template":"","meta":{"_eb_attr":""},"product_brand":[],"product_cat":[40],"product_tag":[],"class_list":["post-5294","product","type-product","status-publish","has-post-thumbnail","product_cat-stainless-steel-plate-coil","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/product\/5294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":28,"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/product\/5294\/revisions"}],"predecessor-version":[{"id":5341,"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/product\/5294\/revisions\/5341"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/media\/5337"}],"wp:attachment":[{"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/media?parent=5294"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/product_brand?post=5294"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/product_cat?post=5294"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jblstainless.com\/am\/wp-json\/wp\/v2\/product_tag?post=5294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}