SUS 201 304 310 316 321 Stainless Steel Round Bar Bright Surface Support Customization

All products comply with SUS standard (Japanese Industrial Standard), and each grade has unique performance advantages, suitable for different application scenarios. The detailed attributes of each grade are as follows:

• Chemical Composition: Cr 16.00~18.00%, Ni 3.50~5.50%, Mn 5.50~7.50%, C ≤0.15%, P ≤0.060%, S ≤0.030%. Cost-effective austenitic stainless steel with high manganese content instead of partial nickel.
• Mechanical Properties: Tensile strength ≥520MPa, yield strength ≥275MPa, elongation ≥40%, hardness HB ≤207. Good tensile and bending performance, easy to process and form.
• Corrosion Resistance: Good anti-rust performance in dry indoor environment, suitable for non-corrosive or mild corrosive scenarios; not suitable for coastal, humid or strong corrosive environments.
• Key Features: High cost performance, bright surface, easy polishing, suitable for decorative and general hardware processing, with good economic benefits.

• Chemical Composition: Cr 18.00~20.00%, Ni 8.00~12.00%, C ≤0.08%, Mn ≤2.00%, Si ≤1.00%, P ≤0.045%, S ≤0.030%. Classic 18-8 austenitic stainless steel, the most widely used grade.
• Mechanical Properties: Tensile strength ≥515MPa, yield strength ≥205MPa, elongation ≥40%, hardness HB ≤201, non-magnetic. Excellent toughness and ductility, easy to cut, weld and form.
• Corrosion Resistance: Excellent atmospheric corrosion resistance, oxidation resistance and resistance to fresh water, weak acid and alkali corrosion; suitable for most indoor and outdoor scenarios.
• Key Features: Comprehensive performance, stable quality, bright surface with high decorative and practical value, widely used in food machinery, daily hardware and precision processing.

• Chemical Composition: Cr 24.00~26.00%, Ni 19.00~22.00%, C ≤0.08%, Mn ≤2.00%, Si ≤1.50%, P ≤0.045%, S ≤0.030%. High-temperature resistant austenitic stainless steel with high chromium and nickel content.
• Mechanical Properties: Tensile strength ≥515MPa, yield strength ≥205MPa, elongation ≥40%, hardness HB ≤217. Excellent high-temperature strength and thermal stability.
• Corrosion & Temperature Resistance: Outstanding high-temperature oxidation resistance, can be used for a long time at 1200℃ (short-term up to 1300℃); good resistance to high-temperature flue gas and sulfide corrosion.
• Key Features: Specialized for high-temperature scenarios, bright surface is not easy to discolor at high temperature, suitable for furnace parts, high-temperature equipment and heat treatment components.

• Chemical Composition: Cr 16.00~18.00%, Ni 10.00~14.00%, Mo 2.00~3.00%, C ≤0.08%, Mn ≤2.00%, Si ≤1.00%, P ≤0.045%, S ≤0.030%. Molybdenum-added austenitic stainless steel, corrosion resistance superior to SUS 304.
• Mechanical Properties: Tensile strength ≥515MPa, yield strength ≥205MPa, elongation ≥40%, hardness HB ≤201. Good toughness, weldability and machinability, non-magnetic.
• Corrosion Resistance: Excellent resistance to chloride ion, salt spray, seawater and weak acid corrosion; suitable for coastal, humid and chemical corrosive environments.
• Key Features: High corrosion resistance, bright surface with good wear resistance, widely used in marine engineering, chemical equipment and medical accessories.

• Chemical Composition: Cr 17.00~19.00%, Ni 9.00~12.00%, Ti 5×C~0.70%, C ≤0.08%, Mn ≤2.00%, Si ≤1.00%, P ≤0.045%, S ≤0.030%. Titanium-stabilized austenitic stainless steel, improved intergranular corrosion resistance.
• Mechanical Properties: Tensile strength ≥515MPa, yield strength ≥205MPa, elongation ≥40%, hardness HB ≤201. Good high-temperature strength and thermal fatigue resistance.
• Corrosion & Temperature Resistance: Effective prevention of intergranular corrosion after welding; stable performance at 600~800℃, good resistance to high-temperature steam and oxidizing media.
• Key Features: Welding performance is better than SUS 304, bright surface is not easy to corrode after welding, suitable for boiler parts, high-temperature pipelines and mechanical components.

All stainless steel round bars adopt high-standard bright surface finish, processed by precision cold drawing, centerless grinding and bright polishing technology, with excellent surface quality and practical performance:

• Surface Appearance: Mirror-like bright luster, uniform color, no oxide scale, no scratches, no burrs, no rust spots, clean and smooth, with high decorative value while ensuring practicality.
• Surface Precision: Surface roughness Ra ≤0.8μm (for standard bright surface), ultra-smooth surface, reducing friction during use, avoiding dirt accumulation, and easy to clean and maintain.
• Performance Enhancement: The bright surface forms a dense passive film, which further improves the material’s corrosion resistance and wear resistance, prolonging the service life of the product.
• Processing Compatibility: The smooth bright surface is conducive to subsequent processing such as threading, drilling, chamfering, welding and electroplating, expanding the application range of the product.
• Surface Consistency: Strict surface inspection, uniform luster of each batch of products, no color difference, ensuring the consistency of product appearance in large-scale use.

We provide one-stop customization services to fully meet the personalized needs of customers in different industries, with flexible customization options and professional technical support:

• Diameter Customization: Standard diameter range: 1mm~200mm (common sizes: 1mm, 2mm, 3mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm); can be customized according to customer drawings or samples, with diameter tolerance ±0.02~±0.05mm.
• Length Customization: Standard length: 1m, 2m, 6m; support fixed-length cutting (tolerance ±1mm), arbitrary length customization from 0.5m to 12m, and can also be cut into small sections according to requirements.
• Tolerance Customization: According to customer use scenarios, provide high-precision tolerance customization (minimum tolerance ±0.01mm) to meet the needs of precision machinery processing.

• On the basis of standard bright surface, we can customize different surface treatments: 2B surface, BA surface (mirror bright), polished surface (400#~1200#), pickled surface, sandblasted surface, etc.
• According to customer needs, adjust the surface roughness (Ra 0.1μm~1.6μm) to adapt to different application scenarios (such as high-precision instruments, decorative parts).

• Secondary processing: Provide threading (BSP, NPT), drilling, chamfering, bending, welding, precision grinding and other processing services, directly delivering finished parts that can be used.
• Shape customization: On the basis of round bar, can customize special shapes such as hexagonal bar, square bar, oval bar according to customer requirements.

• Batch customization: Support small-batch (minimum order quantity 50kg) and large-batch customization, and provide preferential factory prices for large-batch orders.
• Packaging customization: Standard packaging (waterproof plastic film + wooden box); can customize packaging according to customer requirements (such as vacuum packaging, labeled packaging, export standard packaging) to prevent rust and damage during transportation.

• Product Type: SUS 201/304/310/316/321 Stainless Steel Round Bar (Solid)
• Diameter: 1mm~200mm (standard); customizable
• Length: 1m, 2m, 6m (standard); customizable
• Surface Finish: Bright surface (standard); customizable
• Tolerance: Diameter ±0.02~±0.05mm, length ±1mm, straightness ≤1.0mm/m
• Production Process: Hot rolling → Cold drawing → Precision straightening → Centerless grinding → Bright polishing → Fixed-length cutting → Quality inspection → Packaging

• Comply with SUS standard (JIS G4305, JIS G4303), and can also meet ASTM, GB, DIN international standards according to customer requirements.
• Strict quality control: Raw material inspection, chemical composition analysis, mechanical property test, surface quality inspection, dimensional accuracy inspection, non-destructive testing (eddy current testing, ultrasonic testing), etc.
• Certification support: Provide mill test certificate (MTC), chemical composition test report, mechanical property test report, and can provide third-party testing report if needed.

• Hardness: Brinell Hardness (HB) ≤201~217 (depending on grade); Rockwell Hardness (HRB) ≤92~95; Vickers Hardness (HV) ≤220.
• Impact Toughness: Akv ≥60J (room temperature); SUS 304/316/321 have good low-temperature toughness, Akv ≥40J at -196℃.
• Weldability: All grades have good weldability, no cracks after welding; SUS 321 has better post-weld corrosion resistance, no need for complex post-weld heat treatment.
• Machinability: Easy to cut, turn, drill, tap and other processing, suitable for automatic lathe and CNC machining, improving processing efficiency.
• Density: 7.93g/cm³ (SUS 201/304/316/321); 7.98g/cm³ (SUS 310), stable physical properties.

Due to the diverse grades, bright surface and customizable features, the product is widely used in various industries:

• Mechanical Processing: Fasteners (bolts, nuts, screws), shafts, pins, gears, precision machinery parts, suitable for all grades.
• Construction & Decoration: Building handrails, decorative bars, curtain wall supports, outdoor decoration, suitable for SUS 201/304/316 (bright surface has high decorative value).
• Chemical Industry: Corrosion-resistant pipeline supports, reaction vessel accessories, chemical equipment connecting rods, suitable for SUS 316/321.
• High-Temperature Industry: Furnace parts, heat exchangers, high-temperature pipeline accessories, suitable for SUS 310/321.
• Marine Engineering: Offshore platforms, seawater desalination equipment, marine structural parts, suitable for SUS 316.
• Food & Medical Industry: Food processing equipment, medical accessories, pharmaceutical equipment, suitable for SUS 304/316 (food-grade, medical-grade available).
• Other Fields: Automotive accessories, electronic equipment structural parts, hardware tools, daily necessities, etc.

• Full Grade Coverage: SUS 201/304/310/316/321 optional, meeting different performance and cost requirements.
• High-Quality Bright Surface: Mirror-like luster, smooth and clean, decorative and practical, easy to maintain.
• Comprehensive Customization: Size, length, surface, processing customization, fully adapting to personalized needs.
• Strict Quality Assurance: Comply with SUS standard, multiple inspections, stable performance, reliable quality.
• Cost-Effective: Factory direct supply, no middlemen, competitive price, large-batch preferential policies.
• Wide Application: Suitable for multiple industries, strong adaptability to different working environments.
• Professional Service: Provide technical consultation, customization program design, after-sales support, timely response to customer needs.

We are committed to providing high-quality, customizable SUS 201/304/310/316/321 stainless steel round bars with bright surface for global customers. With advanced production equipment, professional technical team, strict quality control and thoughtful customization services, 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!