Stainless Steel 304 / 316L (1.4301 / 1.4404) HLMR Disc Bearing Assemblies
Product Details
| Grade: | 304 (AISI) = 1.4301 (W.Nr.) ，316L (AISI) = 1.4404 (W.Nr.) | Standards: | ASTM A276 (for Bar/rod) Or A240 (for Plate/sheet),A182(for Forging) |
|---|---|---|---|
| Size Range: | Disc O.D.: 50 – 3000mm，Disc Thickness: 5 – 200mm，Bearing Bore (I.D.): 10 – 2000mm, Or Customized Size | Surface Finish: | Ground / Polished (Ra ≤ 0.8 μm) Passivation Or Electropolishing Available |
| Delivery Condition: | Solution Annealed (for Base Material) + Machined & Assembled |
Product Description
- Available in 304 (1.4301) and 316L (1.4404) austenitic stainless steel grades
- 316L grade with molybdenum addition delivers superior chloride and acid corrosion resistance
- Ultra-low carbon composition ensures excellent weldability and minimizes intergranular corrosion after welding
- High surface cleanliness, hygienic performance and long service life with low maintenance
- Custom forging and precision machining available strictly per customer drawings
- Manufactured in full compliance with ASTM and EN international standards
This series of HLMR disc bearing assemblies are precision-manufactured from high-quality austenitic stainless steel, available in 304 / 1.4301 and 316L / 1.4404 material grades. Through advanced forging and optional finishing processes, the products feature uniform internal structure, accurate dimensional control and stable mechanical performance, serving as reliable load-bearing and rotating support components for corrosive working environments.
304 (1.4301) is the most widely used general-purpose stainless steel, suitable for most mild to moderate corrosive scenarios. 316L (1.4404) with molybdenum alloying provides upgraded resistance to chlorides, acids and harsh industrial conditions, and is the preferred choice for heavy-duty, high-corrosion service environments.
- Classic general-purpose austenitic stainless steel
- Excellent corrosion resistance in atmospheric, freshwater and mild chemical environments
- Good mechanical strength, ductility and cold formability
- Cost-effective solution for most conventional industrial applications
- Molybdenum-alloyed austenitic stainless steel
- Enhanced resistance to chloride ion attack, organic acids and industrial corrosive media
- Ultra-low carbon content (≤0.03%) effectively reduces intergranular corrosion risk after welding
- Ideal for marine, chemical processing and high-hygiene demanding applications
| Grade | EN Standard No. | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni | Mo | N ≤ |
|---|---|---|---|---|---|---|---|---|---|---|
| 304 | — | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 18.0–20.0 | 8.0–10.5 | — | 0.10 |
| 1.4301 | EN 10088 | 0.07 | 1.00 | 2.00 | 0.045 | 0.015 | 17.5–19.5 | 8.0–10.5 | — | 0.11 |
| 316L | — | 0.03 | 1.00 | 2.00 | 0.045 | 0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | 0.10 |
| 1.4404 | EN 10088 | 0.03 | 1.00 | 2.00 | 0.045 | 0.015 | 16.5–18.5 | 10.0–13.0 | 2.0–2.5 | 0.11 |
| Property | 304 (UNS S30400 / 1.4301) | 316L (UNS S31603 / 1.4404) |
|---|---|---|
| Minimum Tensile Strength | ≥515 MPa (75 ksi) | ≥485 MPa (70 ksi) |
| Minimum 0.2% Yield Strength | ≥205 MPa (30 ksi) | ≥170 MPa (25 ksi) |
| Minimum Elongation (50mm gauge) | ≥40 % | ≥40 % |
| Maximum Brinell Hardness | ≤201 HB | ≤217 HB |
- We also supply a full range of stainless steel and special alloy forgings for different working conditions:
- Austenitic stainless steel: 304,316L,310S,321,347,904L,254SMo,253Ma,A286(Gr.660),430,440,2Cr13Ni2,3Cr13 etc.
- Duplex stainless steel: 2205,2507,S32750,S32760,F51,F55,F60 etc.
- Special alloys: Monel 400/K-500, Inconel 600/625/718, Hastelloy C22/C276,Incoloy 800,Nimonic 75/80A/105/263,Nitronic 50(XM-19)/60 etc.
- Alloy steel: 4140, 4340, F11, F22, F91,42CrMo etc.
- Carbon steel:A105,A516 Gr.70,A36,S235JR,P235GH,P355GH etc.
- Superior Corrosion Resistance
Stable performance in various corrosive media; 316L grade maintains excellent durability in chloride-containing and acidic industrial environments. - Excellent Weldability
Low-carbon composition ensures sound weld joints and greatly reduces intergranular corrosion risk after welding, suitable for complex fabrication projects. - High Cleanliness & Hygienic Performance
Smooth and dense surface, easy to clean and sanitize, meets the strict hygiene requirements of food, pharmaceutical and other industries. - Long Service Life
High mechanical strength and good wear resistance, with low maintenance cost during long-term operation.
- Food and beverage processing equipment
- Chemical processing and pharmaceutical machinery
- Marine engineering and offshore facilities
- Water treatment and desalination systems
- Architectural decoration and structural components
- Pulp & paper, textile and general industrial equipment
We provide integrated forging and precision machining services, and can produce finished components strictly according to customer drawings:
- Turning, milling, planing, drilling, boring, grinding
- Gear cutting, CNC precision machining
- Sizing cutting, surface treatment and finishing
We have supplied a wide range of forged and machined parts including shafts, cylinders, hollow bars, pistons, tube sheets, rings and disc bearings to customers worldwide.
We have a professional QC inspection team and complete testing equipment to ensure stable and reliable product quality:
- Ultrasonic testing (UT) for internal defects
- Tensile and hardness testing for mechanical properties
- High-precision dimensional measurement
- Spectrometer for chemical composition verification
- Metallographic microstructure inspection
Every batch of products undergoes strict inspection before delivery to meet the quality requirements of various engineering projects.
- Inner packaging: waterproof polybag for moisture and dust protection
- Outer packaging: reinforced wooden case / wooden pallet, suitable for long-distance international transportation
- Custom packaging solutions available upon request
- Normally 10 – 45 days after receipt of advance payment
- Exact delivery time depends on order quantity, specification complexity and machining requirements
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