316 Stainless Steel Bar - ASTM A276/A484 Round, Flat, Hex Shapes

Shandong Kuaima Steel Co., Ltd.

Verified Custom manufacturer 7yrs

Technical Specifications of 316 Stainless Steel Bar

Property	Parameter	Description
Product Name	316 Stainless Steel Bar	Austenitic chromium-nickel stainless steel bar with molybdenum
Material Grade	316 / EN 1.4401 / UNS S31600	International grade equivalents
Standard Compliance	ASTM A276, ASTM A479, EN 10088-3	Meets major international standards
Carbon Content (C)	≤0.08%	Carbon content for strength and weldability
Chromium (Cr)	16.0-18.0%	Provides excellent corrosion resistance
Nickel (Ni)	10.0-14.0%	Enhances ductility and toughness
Molybdenum (Mo)	2.0-3.0%	Improves pitting and crevice corrosion resistance
Manganese (Mn)	≤2.0%	Improves hot working properties
Silicon (Si)	≤1.0%	Deoxidizer and strengthener
Tensile Strength	≥515 MPa	Minimum tensile strength per ASTM A276
Yield Strength	≥205 MPa	Minimum yield strength at 0.2% offset
Elongation	≥40%	Ductility in 50mm gauge length
Hardness	≤217 HBW / ≤95 HRB	Brinell and Rockwell hardness maximum
Diameter Range	6mm - 500mm	Available round bar diameter options
Length	3m - 6m or custom	Standard and custom lengths available
Surface Finish	Black, Peeled, Polished, Bright	Multiple surface treatment options
Application	Marine, Chemical, Pharmaceutical, Food Processing	Typical application industries
Certification	EN 10204 3.1, ISO 9001, ASTM	Quality certifications provided
MOQ	1 ton	Minimum order quantity

316 Stainless Steel Bar - ASTM A276/A484 Round, Flat, Hex Shapes

316 stainless steel bar represents a molybdenum-bearing austenitic grade that delivers exceptional corrosion resistance in chloride environments and elevated temperature applications. This premium-grade material serves critical roles in marine engineering, chemical processing, pharmaceutical equipment, and food production facilities where conventional austenitic grades prove inadequate. Manufactured to stringent ASTM A276 and A484 specifications, our 316 bars are available in round, flat, hexagonal, and square profiles with precise dimensional tolerances and certified chemical composition.

What is 316 Stainless Steel Bar?

316 stainless steel bar is an austenitic chromium-nickel-molybdenum alloy containing 16-18% chromium, 10-14% nickel, and 2-3% molybdenum per ASTM A240 chemical requirements. The molybdenum addition significantly enhances resistance to pitting and crevice corrosion in chloride-containing environments, while maintaining excellent formability and weldability characteristics. This grade exhibits a minimum tensile strength of 515 MPa and yield strength of 205 MPa in annealed condition, with density of 8.00 g/cm³ at 20°C.

316 Stainless Steel Bar Technical Specifications

Our 316 bars comply with ASTM A276/A276M-17 for hot-finished and cold-finished bars and ASTM A484/A484M-18 for general requirements. Chemical composition meets Section 6 requirements with carbon content limited to 0.08% maximum, ensuring optimal weldability without carbide precipitation. Available surface finishes include hot-rolled, cold-drawn, centerless ground, and precision-turned conditions with surface roughness Ra values ranging from 3.2 to 12.5 micrometers depending on finish specification.

Why Choose Our 316 Stainless Steel Bars

We maintain extensive inventory of 316 bars in diameters from 6mm to 300mm for round sections, and thickness ranges of 10mm to 100mm for flat bars. All material ships with EN 10204 Type 3.1 mill test certificates documenting chemical analysis, mechanical properties, and heat treatment records. Our manufacturing facility holds ISO 9001:2015 certification and operates advanced spectroscopic testing equipment to verify composition compliance prior to shipment. Mill-direct pricing structures provide cost-effective solutions for both prototype quantities and production volumes.

316 stainless steel bar supplier

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ is 500 kilograms for stock sizes in round, flat, and hex configurations. Custom profiles and non-standard dimensions require 1,000 kilogram minimum orders. We accommodate smaller quantities for sampling purposes at premium pricing, with orders processed within 3-5 business days for in-stock materials.

Do you provide material test certificates?

Yes, all shipments include EN 10204 Type 3.1 mill certificates issued by our ASTM-approved testing laboratory. Certificates document chemical composition via optical emission spectrometry, tensile testing results per ASTM E8, and hardness verification. Third-party inspection services from SGS, TÜV, or Bureau Veritas can be arranged at customer request with 5-7 day lead time extension.

316 stainless steel bar wholesale

What is the typical delivery time?

Stock sizes in standard lengths ship within 7-10 business days from order confirmation for domestic deliveries. Custom cutting, precision machining, or special surface treatments extend lead times to 15-20 business days. International shipments require additional 10-15 days for documentation processing and freight consolidation, with FOB, CIF, and DDP Incoterms available.

Can you cut to custom sizes?

Our precision cutting services accommodate tolerances of ±0.5mm for lengths and ±0.1mm for diameter specifications using advanced bandsaw and CNC turning equipment. We provide cut-to-length services for bars up to 6 meters, chamfering and deburring operations, and surface grinding to achieve Ra 1.6 micrometers finish. Custom machining includes threading, drilling, and milling operations with engineering drawing review prior to production.

316 stainless steel bar manufacturer

Get a Competitive Quote for 316 Stainless Steel Bar

Contact our technical sales team for factory-competitive pricing on 316 stainless steel bars tailored to your project specifications. We provide detailed quotations within 24 hours including material costs, processing fees, and logistics arrangements. Our metallurgical engineers offer complimentary application consulting to ensure optimal grade selection for your corrosive environment requirements. Request your quote today with quantity requirements, dimensional specifications, and delivery timeline for immediate processing.

Ratings & Reviews

5.0

Very satisfied

Based on 8 reviews for verified purchases

Supplier service

5.0

On-time shipment

5.0

Supplier service

5.0

Carlos Silva

Brazil

verified purchases

2025-09-22

Superior 316 Bars for Chemical Tank Manufacturing
Ordered 4.2 tons of 316 round bars (multiple diameters from 60mm to 120mm, cold-drawn condition) for chemical storage tank internals. Compared quotes from 5 international suppliers - this offer provided best combination of price and certified quality. Mechanical properties exceeded minimums with yield strength at 228 MPa and tensile at 558 MPa. Custom machining service delivered precision threading on 80 pieces with excellent concentricity. CIF Santos delivery completed in 19 days. Material demonstrates excellent resistance to sulfuric acid exposure in our application testing.

Ahmed Al-Hassan

UAE

verified purchases

2025-10-13

Acceptable Quality with Delivery Delay Resolved
Purchased 1,100 kg of 316 flat bars (30mm x 60mm) for desalination plant components. Material quality met ASTM A276 specifications with proper molybdenum content at 2.6%. Initial delivery was delayed by 8 days due to freight consolidation issues, but supplier proactively communicated and offered partial compensation. Surface finish varied slightly between batches (Ra 5.1 to 6.8 micrometers) but remained within acceptable range. Mill certificates were complete and accurate. Issue was resolved professionally, and material performs adequately in our chloride-rich environment.

Wei Chen

Singapore

verified purchases

2025-10-25

Perfect Solution for Pharmaceutical Equipment Project
Ordered 680 kg of 316 round bars (40mm diameter, precision-turned finish) for pharmaceutical mixing equipment shafts. Surface finish achieved Ra 1.8 micrometers, exceeding our Ra 3.2 requirement. Chemical composition analysis showed carbon at 0.04%, ensuring excellent weldability for our sanitary welding procedures. DDP delivery to Singapore completed in 14 days with all import documentation prepared accurately. Technical team provided valuable guidance on heat treatment options. Material passed our stringent FDA compliance verification testing.

Robert Brown

United Kingdom

verified purchases

2025-11-18

Reliable 316 Hex Stock for Fastener Production
Purchased 1,800 kg of 316 hexagonal bars (19mm and 25mm sizes) for manufacturing specialty fasteners. Material certificates showed nickel content at 11.2%, well within ASTM specifications. Dimensional accuracy was good with ±0.15mm tolerance on across-flats measurement. Price point approximately 8% higher than domestic suppliers but justified by consistent quality and complete documentation. One batch had minor surface marks that didn't affect our machining operations. Would order again for critical applications.

William Taylor

Australia

verified purchases

2025-11-30

Premium Quality Bars for Offshore Platform
This is our fourth order - 3.5 tons of 316 round bars (75mm and 100mm diameters, hot-rolled condition) for offshore drilling platform components. Consistent quality across all shipments with chromium content ranging 16.8-17.2%. Custom cutting service provided ±0.3mm tolerance on 4.5-meter lengths with excellent chamfering. Material performs exceptionally in saltwater exposure testing. Lead time of 11 days met our project schedule perfectly. Highly recommended for critical marine applications requiring superior corrosion resistance.

Hans Mueller

Germany

verified purchases

2025-12-08

Good Value 316 Flat Bars for Food Equipment
Ordered 950 kg of 316 flat bars (25mm x 80mm, centerless ground) for food processing machinery components. Pricing was competitive compared to 4 European suppliers we evaluated. Material quality met ASTM A484 specifications with carbon at 0.06%. Delivery took 18 days, slightly longer than quoted 15 days due to customs documentation delay. Surface finish was acceptable at Ra 4.2 micrometers, though we requested Ra 3.5. Overall good experience for the price point.

James Wilson

United Kingdom

verified purchases

2025-12-23

Outstanding Service and Documentation Quality
Purchased 1,200 kg of 316 hex bars (32mm across flats) for marine valve manufacturing. Sales team provided technical consultation within 4 hours of inquiry, helping us select optimal finish specification. Material arrived with complete traceability documentation including spectroscopic test results and hardness verification. SGS third-party inspection arranged smoothly with only 6-day extension. Chloride resistance testing in our lab confirmed superior pitting resistance. Communication throughout was professional and responsive.

Michael Johnson

United States

verified purchases

2026-01-07

Excellent 316 Round Bars for Chemical Processing
Ordered 2.8 tons of 316 round bars (50mm diameter, cold-drawn finish) for our chemical reactor project. Mill certificates confirmed molybdenum content at 2.4%, meeting ASTM A276 requirements perfectly. Surface roughness measured Ra 3.8 micrometers, ideal for our precision machining operations. Delivered in 9 days with full EN 10204 Type 3.1 documentation. Tensile strength tested at 542 MPa, exceeding minimum specifications. Already planning next order for our pharmaceutical equipment division.