904L Hexagonal Stainless Steel Bar Stock JIS Standard TSHS Surface Finish Customized

904L is a low-carbon, high-alloy super austenitic stainless steel, known for its superior corrosion resistance and comprehensive mechanical properties, which fully complies with JIS standard requirements (JIS G4305, JIS G4303) for material composition and performance. Its detailed attributes are as follows:

The chemical composition is strictly controlled to ensure stable performance, with the following key components (mass fraction):

• Chromium (Cr): 21.00~23.00% — Enhances oxidation resistance and basic corrosion resistance, forming a dense passive film on the surface.
• Nickel (Ni): 24.00~26.00% — Improves toughness, ductility and low-temperature performance, ensuring the material is not brittle in harsh environments.
• Molybdenum (Mo): 4.00~5.00% — Significantly enhances resistance to chloride ion corrosion, pitting corrosion and crevice corrosion, making it suitable for corrosive environments.
• Copper (Cu): 1.00~2.00% — Improves resistance to dilute sulfuric acid, phosphoric acid and other weak corrosive media, expanding the application scope.
• Carbon (C): ≤0.02% — Low carbon content effectively prevents intergranular corrosion, especially after welding, ensuring the material’s integrity and corrosion resistance.
• Other elements: Manganese (Mn) ≤2.00%, Silicon (Si) ≤1.00%, Phosphorus (P) ≤0.030%, Sulfur (S) ≤0.015% — Strictly controlled to avoid impurity impact on performance.

All 904L hexagonal stainless steel rods/bars undergo strict mechanical property testing, and the indicators fully meet JIS standard requirements, ensuring stable and reliable use in industrial construction:

• Tensile Strength (σb): ≥490MPa — High tensile strength, able to bear large loads, suitable for structural parts in industrial construction.
• Yield Strength (σ0.2): ≥240MPa — Good yield performance, not easy to deform under pressure, ensuring structural stability.
• Elongation (δ5): ≥45% — Excellent ductility, easy to cut, bend, punch and other processing, adapting to various customized processing needs.
• Hardness: Brinell Hardness (HB) ≤220, Rockwell Hardness (HRB) ≤95 — Moderate hardness, balancing machinability and wear resistance.
• Impact Toughness (Akv): ≥60J (room temperature); ≥40J (-196℃) — Good low-temperature toughness, no brittle fracture in low-temperature or harsh weather conditions, suitable for outdoor industrial construction.
• Weldability: Excellent weldability, no cracks or defects after welding, post-weld corrosion resistance remains stable, no need for complex post-weld heat treatment, improving construction efficiency.

As a super austenitic stainless steel, 904L has outstanding corrosion resistance, far superior to ordinary 304, 316L grades, and fully adapts to the harsh environments in industrial construction:

• Resistance to chloride ion corrosion: Can resist seawater, salt spray, and chloride-containing media corrosion, suitable for coastal industrial construction, marine engineering and other scenarios.
• Resistance to acid-base corrosion: Excellent resistance to dilute sulfuric acid, phosphoric acid, formic acid, acetic acid and other weak to medium corrosive media, suitable for chemical industrial construction, acid-base pipeline supports and other parts.
• Intergranular corrosion resistance: Low carbon content and reasonable alloy ratio effectively prevent intergranular corrosion, ensuring the material’s service life in long-term use.
• Oxidation resistance: Can resist high-temperature oxidation (long-term service temperature ≤800℃), suitable for high-temperature industrial construction scenarios such as furnace supports and high-temperature pipeline accessories.

The product adopts a hexagonal cross-section design, which has unique structural advantages compared with round rods, especially suitable for industrial construction scenarios that require stable installation and torque transmission:

• Shape Specification: Standard hexagonal cross-section, each side length is uniform, no deformation, sharp edges and corners (can be customized to rounded corners according to requirements), easy to install and fix, not easy to slip during use.
• Dimensional Precision: Strictly in line with JIS standard, side length tolerance: ±0.02~±0.05mm, diagonal tolerance: ±0.03~±0.06mm, high dimensional consistency, ensuring interchangeability during assembly.
• Structural Stability: Hexagonal shape has better torque transmission performance than round rods, suitable for connecting parts, fasteners and structural supports in industrial construction, improving the stability of the whole structure.
• Processing Adaptability: Easy to carry out threading, drilling, chamfering and other processing on the hexagonal surface, suitable for customized processing of various industrial construction parts.

The product adopts TSHS surface finish (a high-standard bright polishing surface), which is processed by professional precision polishing technology, with excellent surface quality and practical performance, fully meeting the requirements of industrial construction:

• Surface Appearance: Bright as a mirror, uniform luster, no oxide scale, no scratches, no burrs, no rust spots, clean and smooth, with good decorative performance while ensuring practicality.
• Surface Roughness: Ra≤0.2μm, ultra-smooth surface, reducing friction during use, avoiding dirt accumulation, and easy to clean and maintain, suitable for industrial construction scenarios with high hygiene requirements.
• Corrosion Resistance Enhancement: The TSHS surface forms a dense and uniform passive film, which further improves the material’s corrosion resistance, prolongs the service life in harsh industrial environments, and reduces maintenance costs.
• Processing Compatibility: The smooth TSHS surface is conducive to subsequent processing such as welding, painting and electroplating (if needed), expanding the application range of the product in industrial construction.

All products are strictly manufactured, inspected and tested in accordance with JIS standards (mainly JIS G4305: 2015 Stainless Steel Bars, JIS G4303: 2015 Stainless Steel Plates, Sheets and Strips), ensuring product quality and compliance:

• Raw Material Inspection: All raw materials are selected from qualified 904L stainless steel ingots, and chemical composition analysis is carried out to ensure that the raw materials meet JIS standard requirements.
• Production Process Control: The production process (hot rolling, cold drawing, precision straightening, hexagonal forming, TSHS surface polishing, fixed-length cutting) is strictly controlled, and each link is inspected to avoid process defects.
• Finished Product Inspection: Each batch of products undergoes comprehensive inspection, including dimensional accuracy inspection, surface quality inspection, mechanical property test, corrosion resistance test, non-destructive testing (eddy current testing, ultrasonic testing), etc., to ensure no internal defects, surface flaws and performance non-compliance.
• Certification Support: We can provide JIS standard certification, mill test certificate (MTC), chemical composition test report, mechanical property test report and other relevant documents to meet the quality inspection requirements of industrial construction projects.

We provide comprehensive customized services to meet the diverse needs of different industrial construction scenarios, with flexible customization options:

• Size Customization:
  • Side Length: 5mm~100mm (standard size) or customized according to customer drawings and requirements.
  • Length: Standard length (1m, 2m, 6m) or custom fixed-length cutting (tolerance ±1mm), supporting arbitrary length customization from 0.5m to 12m.
  • Cross-Section Customization: Standard hexagonal shape, can be customized to rounded hexagonal, unequal-sided hexagonal and other special hexagonal shapes according to needs.
• Surface Finish Customization: On the basis of TSHS surface, we can also provide pickled surface, polished surface (400#~1200#), sandblasted surface and other surface treatments according to customer requirements.
• Processing Customization: Provide secondary processing services such as threading, drilling, chamfering, bending, welding, and precision machining, directly delivering finished parts that can be used in industrial construction, saving customer processing costs.
• Batch Customization: Support small-batch (minimum order quantity 100kg) and large-batch customization, and provide preferential factory prices for large-batch orders, meeting the needs of large-scale industrial construction projects.

• Product Type: 904L Hexagonal Stainless Steel Rod / Hexagonal Stainless Steel Bar
• Side Length: 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm (standard hot-selling size); 5mm~100mm (customizable)
• Length: 1000mm, 2000mm, 6000mm (standard); 0.5m~12m (customizable fixed length)
• Surface Finish: TSHS surface (standard), pickled surface, polished surface, sandblasted surface (customizable)
• Tolerance: Side length ±0.02~±0.05mm, length ±1mm, straightness ≤1.0mm/m
• Packaging: Waterproof plastic film wrapping + wooden box packaging, preventing rust and damage during transportation, suitable for long-distance transportation and storage.

Due to the superior performance of 904L material, hexagonal shape, TSHS surface and JIS standard quality, the product is widely used in various industrial construction fields and harsh environment projects:

• Industrial Construction: Structural supports, connecting parts, fasteners (bolts, nuts, studs), scaffolding accessories, pipeline supports, equipment bases in industrial plants, chemical plants, power plants, etc.
• Marine Engineering: Coastal industrial buildings, offshore platforms, seawater desalination projects, marine structural parts, corrosion-resistant supports and fasteners.
• Chemical Industry: Corrosion-resistant pipeline supports, reaction vessel accessories, chemical equipment connecting rods, acid-base storage tank supports.
• High-Temperature Industrial Construction: High-temperature furnace supports, heat exchanger accessories, high-temperature pipeline connecting parts, suitable for high-temperature working environments up to 800℃.
• Other Fields: Precision machinery parts, electronic equipment structural parts, medical equipment accessories (high corrosion resistance requirements), architectural decoration (high-grade outdoor decoration), etc.

• Superior Material: 904L super austenitic stainless steel, excellent corrosion resistance and mechanical performance, far better than ordinary stainless steel grades.
• Strict Standard: Fully compliant with JIS standard, strict quality control, complete certification, reliable quality for industrial construction.
• High-Quality Surface: TSHS surface finish, smooth and bright, corrosion-resistant, easy to clean and maintain.
• Practical Shape: Hexagonal cross-section, stable structure, good torque transmission, suitable for various industrial construction installation scenarios.
• Full Customization: Flexible size, surface, processing customization, fully adapting to diverse industrial construction needs.
• Cost-Effective: Factory direct supply, no middlemen, competitive price, large-batch preferential policies, reducing procurement costs for industrial construction projects.
• Long Service Life: Excellent corrosion resistance and wear resistance, reducing maintenance frequency and cost, suitable for long-term use in harsh industrial environments.

We are committed to providing high-quality, customized 904L hexagonal stainless steel rods/bars that comply with JIS standard and TSHS surface finish for global industrial construction customers. With professional production technology, strict quality control, thoughtful customized services and competitive factory prices, we strive to become your trusted long-term cooperative partner. If you have any needs for product specifications, customization, quotes or certification, please contact us at any time, and we will provide you with the best solution!