{"id":2569,"date":"2026-04-09T17:23:29","date_gmt":"2026-04-09T09:23:29","guid":{"rendered":"https:\/\/jblstainless.com\/?post_type=product&p=2569"},"modified":"2026-04-09T17:23:30","modified_gmt":"2026-04-09T09:23:30","slug":"420-stainless-steel-pipe","status":"publish","type":"product","link":"https:\/\/jblstainless.com\/fa\/420-stainless-steel-pipe\/","title":{"rendered":"420 Stainless Steel Pipe"},"content":{"rendered":"
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When Hardness and Wear Resistance Cannot Be Compromised\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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420 stainless steel pipe is not a generic commodity \u2014 it is an engineered solution for environments that demand edge retention, surface durability, and controlled corrosion resistance.<\/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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Why 420 Stainless Steel<\/h3>\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tHighest Hardness in Stainless\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tAchieves Rockwell hardness up to 50 HRC after heat treatment \u2014 outperforming 304 and 316 grades significantly in wear-critical applications.\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tHeat-Treatable for Precision\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tUnique among stainless grades: can be hardened and tempered to meet exact project specs, offering flexibility that austenitic grades cannot.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tSurgical-Grade Cleanliness\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tKnown as \"surgical steel\" \u2014 compliant with medical and food-processing hygiene standards when properly finished, ensuring regulatory safety.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tMagnetic & Machineable\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tInherently magnetic in all conditions \u2014 simplifies sorting, MRI-shielded environments, and precision machining operations.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tHigh-Temperature Stability\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tMelting point of 1,450\u00b0C with thermal conductivity of 24.9 W\/m\u00b7K \u2014 maintains structural integrity in demanding thermal cycles.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tASTM A276 Compliance\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tFully certified to ASTM A276, A240, and A580 standards \u2014 accepted by procurement departments in aerospace, defense, and medical sectors.\n\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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420 Stainless Steel Pipe Specification<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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All values are per ASTM A276 and standard material certifications. Custom heat treatment conditions available on request.<\/p>
Property<\/th>Value \/ Range<\/th>Unit<\/th>Notes<\/th><\/tr><\/thead>
Grade Designation<\/td>AISI 420 \/ UNS S42000 \/ 1.4021<\/td>\u2014<\/td>ASTM, EN, DIN standards<\/td><\/tr>
Tensile Strength<\/td>620 \u2013 750<\/td>MPa<\/td>Annealed condition<\/td><\/tr>
Yield Strength<\/td>345 \u2013 415<\/td>MPa<\/td>0.2% proof stress<\/td><\/tr>
Rockwell Hardness<\/td>Up to 50<\/td>HRC<\/td>Heat-treated condition<\/td><\/tr>
Brinell Hardness<\/td>207 \u2013 235<\/td>HB<\/td>Annealed<\/td><\/tr>
Elongation<\/td>20<\/td>%<\/td>Min. in 50 mm<\/td><\/tr>
Elastic Modulus<\/td>200<\/td>GPa<\/td>\u2014<\/td><\/tr>
Density<\/td>7.75<\/td>g\/cm\u00b3<\/td>\u2014<\/td><\/tr>
Melting Point<\/td>1,450<\/td>\u00b0C<\/td>Approx.<\/td><\/tr>
Thermal Conductivity<\/td>24.9<\/td>W\/m\u00b7K<\/td>At 100\u00b0C<\/td><\/tr>
Chromium Content<\/td>12 \u2013 14<\/td>%<\/td>Min. for stainless classification<\/td><\/tr>
Carbon Content<\/td>0.15 \u2013 0.45<\/td>%<\/td>Higher C = higher hardness<\/td><\/tr>
Applicable Standards<\/td>ASTM A276 \/ A240 \/ A580<\/td>\u2014<\/td>Mill certs available<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Available Dimensions <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Type<\/th>OD Range<\/th>Wall Thickness<\/th>Length<\/th><\/tr><\/thead>
\u0644\u0648\u0644\u0647 \u0628\u062f\u0648\u0646 \u062f\u0631\u0632<\/td>6 mm \u2013 219 mm<\/td>1 mm \u2013 20 mm<\/td>1 m \u2013 12 m \/ Custom<\/td><\/tr>
\u0644\u0648\u0644\u0647 \u062c\u0648\u0634\u06cc<\/td>6 mm \u2013 508 mm<\/td>0.5 mm \u2013 15 mm<\/td>1 m \u2013 12 m \/ Custom<\/td><\/tr>
Round Tube<\/td>3 mm \u2013 100 mm<\/td>0.5 mm \u2013 10 mm<\/td>Custom cut available<\/td><\/tr><\/tbody><\/table>\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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\n\t\t\t\t\t\t\t\t\t\t\"420\t\t\t\t\t\t\t\t\t\t\t
\u0644\u0648\u0644\u0647 \u0628\u062f\u0648\u0646 \u062f\u0631\u0632<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\"stainless\t\t\t\t\t\t\t\t\t\t\t
\u0644\u0648\u0644\u0647 \u062c\u0648\u0634\u06cc<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\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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Application<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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From operating theater instruments to petroleum valve seats, 420 steel pipe serves industries that cannot tolerate failure.<\/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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tCutlery & Blades\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tEdge retention and surface finish make 420 the standard material for high-carbon knife blades, scissors, and culinary tools.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tMedical & Surgical\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tBiocompatible surface, autoclave-safe, and ISO 13485-compatible. Widely specified for surgical instruments, scalpels, and implant tooling.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tValves & Pumps\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tHard, wear-resistant seating surfaces in control valves, pump shafts, and fittings operating under pressure or abrasive media.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tOil & Gas\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tDownhole tools, wellhead components, and valve trim in environments demanding hardness alongside moderate corrosion resistance.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tIndustrial Gears\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tPrecision gears, spindles, and shafts requiring dimensional stability under heavy load and repeated thermal cycling.\n\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tAutomotive\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tEngine components, fuel system parts, and injector bodies benefiting from 420's combination of strength and machinability.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tJewelry & Watches\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tScratch-resistant bezels, watch case tubes, and decorative hardware with a polishable, mirror-bright surface finish.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tGeneral Engineering\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tShafts, bearings, fasteners, and structural tubes where heat-treatable stainless steel provides a cost-effective solution.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\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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420 Stainless Steel Vs 304\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Property<\/th>420 SS\u00a0<\/th>304 SS<\/th><\/tr><\/thead>
Max Hardness (HRC)<\/td>50\u00a0<\/td>~20 (work-hardened)<\/td><\/tr>
Heat Treatable<\/td>Yes\u00a0<\/td>No<\/td><\/tr>
Tensile Strength<\/td>620\u2013750 MPa<\/td>515\u2013620 MPa<\/td><\/tr>
Corrosion Resistance<\/td>Moderate<\/td>Excellent<\/td><\/tr>
\u0645\u063a\u0646\u0627\u0637\u06cc\u0633\u06cc<\/td>Yes<\/td>No<\/td><\/tr>
Weldability<\/td>Limited (pre\/post heat)<\/td>Excellent<\/td><\/tr>
Best For<\/td>Hardness & wear<\/td>\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0639\u0645\u0648\u0645\u06cc<\/td><\/tr><\/tbody><\/table>\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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420 Stainless Steel Pipe is a martensitic grade with Rockwell hardness up to 50 HRC and tensile strength of 620\u2013750 MPa \u2014 the preferred choice for cutlery, surgical instruments, valves, and wear-critical industrial systems.<\/p>\n

50 HRC Max Hardness
\n750 MPa Tensile Strength
\n12\u201314% Chromium
\n1450\u00b0C Melting Point<\/p>\n

ASTM A276 Certified<\/p>\n

Seamless & Welded Available<\/p>\n

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