S41000 VS S42000 Stainless steel: What’s the biggest difference?
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S41000 stainless steel is a heat-resistant and corrosion-resistant steel, also known as AISI 410 stainless steel or UNS S41000. It is a martensitic stainless steel composed mainly of chromium and carbon, with contents of 11.5-13.5% and 0.15% respectively.
S42000 stainless steel, also known as 420 stainless steel, is a martensitic stainless steel that is magnetic and heat treatable.
| Product name | ASTM420 420F 420FSe S42000 S42010 S42020 S42023 stainless steel tube/pipe | |||
| Outside diameter | 6mm-3000mm | |||
| W.T. | 0.5-100mm | |||
| Length |
1. Single Random Length and double Random Length. 2. SRL: 3M-5.8M DRL: 10-11.8M or As clients requested length 3. Fixed length (5.8m, 6m, 12m) |
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| Pipe Ends | Under 2 inch plain end. 2 inch and above Beveled. Plastic caps (small OD). | |||
| Surface Treatment | black paint, varnish, oil, galvanized, anti-corrosion coated. | |||
| Marking | Supply Logo + Standard + Size(mm) + HEAT NO +or as your requirement | |||
| Test | Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, hydraulic testing , X-ray Test, HIC & SSC test, etc. or as your requirment | |||
| Certificates | API, ISO, SGS, BV, CE, PED, KOC, CCRC, PDO and etc. | |||
Features
High strength and hardness: S42000 stainless steel can reach high hardness through heat treatment due to its high carbon content, and the hardness can reach 60 HRC.
Good corrosion resistance: Similar to 410 stainless steel, but with increased strength and hardness, it has excellent corrosion resistance to a variety of environments such as fresh water, sea water and acidic environments.
Magnetic properties: S42000 is magnetic in both annealed and hardened conditions.
Heat treatment
Annealing treatment: Heat 420 stainless steel to about 800-900℃, and ensure sufficient soaking time, and then slowly cool it in the furnace to eliminate internal stress and improve processability.
Quenching: 420 SS is heated to austenitizing temperature, usually between 950-1050°C, and then rapidly cooled in oil or water, resulting in a martensitic transformation, forming a hard and brittle structure.
Tempering: SS420 after quenching is tempered to a lower temperature, usually between 150-400°C, to eliminate internal stress and improve toughness and ductility.
