SAE/AISI 304L SS304L SUS304L DIN 1.4307 UNS S30403 Hot Rolled Forged Stainless Steel


1: 304L steel introduction

  Type 304L is a lower carbon variant of Grade 304 - the steel can be welded without the resulting issue of carbon precipitation (precipitation of chromium carbide as heat is applied during the welding process which depletes the chromium element of the steel thus reducing its anti-corrosive/oxidation effectiveness).

As a result, Type 304L stainless steel is a sought after material for use in severely corrosive conditions. Weld annealing is only necessary in applications where stress loads are excessive.

This steel Grade is found in a variety of commercial sectors, particularly in the chemical industry.

Benefits of using 304L Stainless Steel

Benefits of using grade 304L stainless steel include:

• Low carbon content eliminates carbon precipitation in the welding process
• Can be used in severe corrosive environments
• Weld annealing only required in high stress applications
• Very similar to Type 304

304 & 304L plate and pipes have similar properties and in certain cases are stocked with Dual Certification, where it is concluded that each item has properties and a composition which comply with both steel types. Grade 304H cannot be included in this equation due to the steel's higher carbon content which is intended for use in elevated temperature applications.

2: 304L Steel equivalent  
3: 304L steel chemical composition  
4: 304L steel mechanical properties   
   The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as annealed, Solid Solution . If you want to know the properties, kindly contact the salesman.

5: 304L steel overviews
6: Delivery condition

For hot forged  bar, usually the delivery condition is hot forged, annealed/ solid solution , rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed/ solid solution , Black surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed/ solid solution , black surface.
For cold drawn bar, usually the delivery condition is cold drawn, annealed/QT, peeled/black surface




Hunan Qilu Industrial Co., Ltd has the capacity to forge round steel, steel flat, square steel, module, shaft and roller, etc. The main specifications of the products include Φ80-1000mm forging materials and 80-1200mm square billets and which the maximum piece weight can reach 50T.







Hunan Qilu Industrial Co., Ltd  were already engaged in exporting steel for 11 years, could supply a great variety of hot forged,  hot rolled  and  cold drawn Steels ,  including engineering steel, cold work tool steel, hot work tool steel, plastic mold steel, spring steel, high speed steel, stainless steel etc., besides Qilu Industrial also has their own heating treatment shop and machining shop to provide heating and cutting service.

Since 2008 year, Hunan Qilu Industrial has the right to export all  FORGED STEEL  behalf of Qilu Speical Steel Co.,ltd which is specialized in smelting and forging of special steel since 1965 year, now Qilu special steel is one of the biggest manufacturer of forged product in China.The forged products are used in Automotive, Aerospace, Power Generation, Oil & Gas, Transportation and Industrial. We already set up the warehouse in Wuxi and Dongguan city, more than 20000 tons ex-stock could be supplied with kinds of size.

Qilu Industrial is the professional one-stop steel manufacturer, stockist and exporter in China, our customers spread all over the world, include West Europe, North America, South America, Asia, Middle Asia, Africa, Australia, etc.







The company owns advanced special steel smelting facilities and forging processing equipments, the main steel-making equipment include 2 sets of 50t ultra-high power electric arc furnaces,2 sets of 60t LF refining furnaces,1 set of 60t vacuum degassing refining furnace and 4 sets of 1-20t electroslag re-melting furnaces.
The main forging equipments mainly include:3 sets of 5t electro-hydraulic hammers, 1 set of high-speed forging units of 800t,1600t,2000t and 4500t respectively.













Hunan Qilu Industrial CO., LTD