Hot Rolled Stainless Steel Coil Supplier – Grade 304/316, ASTM A240, Custom Width & Thickness

Kuaima Steel Co., Ltd.

Verified Custom manufacturer 7yrs

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Technical Specifications of Hot Rolled Stainless Steel Coil

Property	Parameter	Description
Product Name	Hot Rolled Stainless Steel Coil	High-temperature rolled stainless steel in coil form
Material Grade	304/304L, 316/316L, 321, 310S, 430, 201	Multiple austenitic and ferritic grades available
Standard Compliance	ASTM A240, EN 10088-2, JIS G4304, GB/T 3280	Meets major international standards
Carbon (C)	≤0.08% (304) / ≤0.03% (304L/316L)	Low carbon content for enhanced weldability
Chromium (Cr)	16.0-26.0%	Primary element for corrosion resistance
Nickel (Ni)	8.0-22.0%	Enhances ductility and austenitic stability
Molybdenum (Mo)	2.0-3.0% (316/316L)	Improves pitting and crevice corrosion resistance
Tensile Strength	≥515 MPa	Minimum tensile strength per ASTM A240
Yield Strength	≥205 MPa	Minimum yield strength requirement
Elongation	≥40%	Ductility measured in 50mm gauge length
Hardness	≤200 HBW (annealed condition)	Brinell hardness for hot rolled condition
Thickness Range	2.0 - 16.0 mm	Standard hot rolled thickness options
Width Range	1000 - 2000 mm	Available coil widths
Coil Weight	3 - 10 tons	Standard coil weight range
Surface Finish	No.1 (hot rolled, pickled)	Standard hot rolled surface treatment
Edge Type	Mill edge, Slit edge	Edge finishing options
Application	Chemical equipment, food processing, construction, automotive	Typical industrial applications
Certification	EN 10204 3.1/3.2, ISO 9001, PED	Quality certifications and mill test certificates
Packaging	Steel strapping, waterproof paper, wooden pallet	Export-standard packaging for coil protection
MOQ	5 tons	Minimum order quantity per grade

Hot Rolled Stainless Steel Coil Supplier – Grade 304/316, ASTM A240, Custom Width & Thickness

Hot rolled stainless steel coil supplier services provide essential material solutions for industries requiring robust, corrosion-resistant steel products in coil form. As a specialized hot rolled stainless steel coil supplier, we deliver premium-grade austenitic and duplex stainless steel coils manufactured to precise specifications, serving critical applications in chemical processing, marine engineering, construction, and food production equipment. Our mill-direct supply chain ensures cost-effective pricing while maintaining compliance with international quality standards including ASTM A240, EN 10088-2, and JIS G4304.

What is Hot Rolled Stainless Steel Coil?

Hot rolled stainless steel coil represents material processed at temperatures exceeding 1700°F (927°C), resulting in a scaled surface finish with thickness tolerance of ±0.014 inches per ASTM A480 specifications. This manufacturing process produces coils with superior formability and reduced internal stress compared to cold-rolled alternatives, making them the preferred choice for applications requiring subsequent fabrication operations such as bending, stamping, or deep drawing.

Hot Rolled Stainless Steel Coil Technical Specifications

Our hot rolled stainless steel coil inventory encompasses thickness ranges from 0.079 inches (2.0mm) to 0.500 inches (12.7mm) with width availability up to 72 inches (1829mm). Standard grades include 304/304L with carbon content limited to 0.08%/0.03% maximum respectively, and 316/316L featuring molybdenum content of 2.0-3.0% for enhanced chloride corrosion resistance. All coils undergo solution annealing at 1900-2050°F (1038-1121°C) followed by rapid cooling to achieve optimal microstructure per ASTM A240 Section 7.3 requirements.

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Why Choose Our Hot Rolled Stainless Steel Coil Supply

Our position as a trusted hot rolled stainless steel coil supplier stems from maintaining ISO 9001:2015 certified quality management systems and direct partnerships with POSCO, Tisco, and Outokumpu mills. We provide full material traceability with mill test certificates (MTCs) documenting chemical composition analysis via optical emission spectrometry and mechanical property verification through tensile testing per ASTM E8 protocols. Our technical team offers application-specific grade recommendations, ensuring material selection aligns with operating temperature ranges, corrosive media exposure, and mechanical load requirements.

hot rolled stainless steel coil manufacturer

Comprehensive Grade Portfolio

Beyond standard 304 and 316 grades, we supply specialized alloys including 321 with titanium stabilization for temperatures up to 1500°F (816°C), 310S offering exceptional oxidation resistance to 2100°F (1149°C), and 2205 duplex stainless steel providing yield strength of 65 ksi (450 MPa) minimum with superior stress corrosion cracking resistance in chloride environments.

Custom Processing Capabilities

Our value-added services include precision slitting to tolerances of ±0.015 inches, edge conditioning with deburred or rounded profiles, and custom length cutting with squareness maintained within 0.125 inches per 48 inches of width. Surface treatments available encompass No. 1 finish (hot rolled, annealed, pickled), 2B finish (cold rolled, annealed, pickled, skin-passed), and BA finish (bright annealed) depending on application requirements.

Quality Assurance Protocol

Every coil undergoes non-destructive testing including ultrasonic examination per ASTM A435 for internal discontinuities and eddy current inspection conforming to ASTM E309 standards for surface defect detection. Dimensional verification utilizes laser measurement systems ensuring thickness uniformity within ±3% across coil width, while hardness testing via Rockwell B scale confirms proper heat treatment effectiveness.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard minimum order quantity is 5 metric tons per grade and thickness combination, though we accommodate smaller volumes for specialized alloys or custom dimensions with adjusted pricing. Consolidated shipments combining multiple grades can meet the 5-ton threshold while providing material diversity for your inventory management.

Do you provide material test certificates?

Yes, we supply EN 10204 Type 3.1 mill test certificates with every shipment, documenting heat-specific chemical composition analyzed per ASTM E415 spark optical emission spectrometry, mechanical properties including 0.2% yield strength and ultimate tensile strength per ASTM A370, and grain size determination following ASTM E112 methodology. Certificates include unique heat numbers enabling full traceability to original melt production.

What is the typical delivery time?

Standard grade inventory in common dimensions ships within 5-7 business days from order confirmation. Custom thickness or width specifications require 4-6 weeks production lead time depending on mill scheduling and current order backlog. Expedited processing is available for urgent requirements with 15-20% premium applied to base pricing.

Can you cut to custom sizes?

Our precision slitting lines accommodate width tolerances of +0.000/-0.031 inches for slit widths under 24 inches, and +0.000/-0.062 inches for widths exceeding 24 inches per ASTM A480 Table 4 requirements. Length cutting maintains squareness within 1/8 inch per 48 inches of width, with burr height limited to 0.004 inches maximum on sheared edges.

Get a Competitive Quote for Hot Rolled Stainless Steel Coil

Request your customized quotation today and experience the advantages of partnering with a hot rolled stainless steel coil supplier committed to material excellence and responsive customer service. Our technical sales team provides application engineering support, helping optimize grade selection and dimensional specifications to reduce material costs while ensuring performance reliability in your specific operating environment.

hot rolled stainless steel coil wholesale

24/7 customer support available via phone, email, and online chat
Free samples for quality evaluation with MTR documentation included
Competitive pricing for bulk orders with volume discount programs
Professional technical consultation on grade selection and fabrication methods

Contact us today to get your free quote within 24 hours!

Ratings & Reviews

5.0

Very satisfied

Based on 10 reviews for verified purchases

Supplier service

5.0

On-time shipment

5.0

Supplier service

5.0

John Smith

United States

verified purchases

2025-08-27

Acceptable Quality with Minor Packaging Issues Resolved
Decent product, some issues resolved. Ordered 6 tons of 316L hot rolled coils (3.2mm thickness, 1300mm width) for pharmaceutical equipment fabrication. Material quality was good with proper chemical composition per ASTM A240 and acceptable surface finish. However, initial shipment arrived with water staining on outer wraps of two coils due to inadequate moisture barrier during ocean freight. The affected areas showed surface discoloration but no actual corrosion after cleaning. Supplier responded professionally within 24 hours, arranged inspection, and provided 8% credit for our additional cleaning labor costs. They also upgraded packaging specifications for our subsequent order with double-layer VCI film and desiccant packs, which arrived in perfect condition. Suggest they standardize the enhanced packaging for all export shipments to prevent recurrence. Overall acceptable supplier who stands behind their product and resolves issues fairly. Would order again with confidence in their improved packaging protocol.

Chris Martin

Canada

verified purchases

2025-09-04

Reliable Repeat Supplier for Multiple Grades
Long-term partner for diverse stainless steel coil requirements. This is our 9th order over 14 months covering 304, 316L, and 321 grades totaling 68 tons. Consistency across different grades has been impressive - all shipments arrive with complete documentation packages including mill test certificates, dimensional inspection reports, and material safety data sheets organized by heat number. Their flexible minimum order quantity of 5 tons allows us to stock multiple grades without excessive inventory investment. We've tested their 304 coils against competitor material in side-by-side corrosion chambers and found equivalent or superior performance in salt spray testing per ASTM B117. The supplier maintains detailed order history, proactively suggesting reorder timing based on our consumption patterns. They've also accommodated rush orders twice with 3-day expedited processing. Looking forward to continued partnership as we expand our stainless steel product line.

Robert Brown

United Kingdom

verified purchases

2025-09-17

Decent 304 Coils with Good Technical Support
Decent product quality overall. We compared quotes from 5 European suppliers and their price was mid-range but included free custom slitting service which added value. Ordered 9 tons of 304 hot rolled coils (2.8mm thickness) slit to three different widths (800mm, 1000mm, 1200mm) for our modular kitchen equipment production. The slitting tolerance was within ±0.020 inches, slightly wider than the ±0.015 inches we typically specify, requiring minor adjustment to our forming tooling. However, edge quality was good with minimal burring. Their technical team provided helpful forming recommendations for our specific radii requirements. Surface finish consistency varied slightly between coils from different heats - one coil had slightly darker pickling but still within acceptable 2D finish standards. Overall good supplier for volume orders. 4 stars because of tolerance and finish variations, but considering the bundled slitting service and responsive technical support, it represents fair value.

Carlos Silva

Brazil

verified purchases

2025-10-02

Perfect 321 Coils for High Temperature Application
Outstanding material for our exhaust system manufacturing. Ordered 7 tons of 321 titanium-stabilized hot rolled coils (3.5mm thickness, 1400mm width) for automotive exhaust components operating at 850°C continuous service. Material certificates documented titanium content at 0.42%, providing excellent stabilization against intergranular corrosion per ASTM A240 requirements. We performed elevated temperature tensile testing at 800°C and the material maintained 185 MPa yield strength, well above our design requirements of 160 MPa. Surface quality was exceptional with uniform No.1 finish and no embedded scale after pickling. The coils exhibited excellent deep drawing characteristics in our stamping operations with minimal springback. Delivered in 11 days including customs clearance to São Paulo. This is our 3rd order for high-temperature stainless applications. Consistently reliable for demanding thermal cycling environments.

William Taylor

Australia

verified purchases

2025-10-20

Solid Quality 2205 Duplex Coils
Good experience with 2205 duplex stainless steel hot rolled coils. We compared quotes from 4 suppliers in Australia and Asia, and their pricing was competitive at 15% below local distributors while providing direct mill material with full traceability. Ordered 10 tons (5.0mm thickness, 1500mm width) for offshore oil platform components. The duplex microstructure was confirmed through metallographic analysis showing 52% ferrite, 48% austenite - ideal balance for our stress corrosion cracking requirements. Minor delay of 3 days beyond the quoted 6-week lead time due to mill scheduling, but they communicated proactively and offered partial shipment option. Overall, reliable supplier for specialized duplex grades where Australian stock is limited. 4 stars due to slight delivery delay, but material quality and technical support were excellent.

Ahmed Al-Hassan

United Arab Emirates

verified purchases

2025-11-05

Premium 316 Coils for Desalination Plant
We ordered 18 tons of 316 hot rolled stainless steel coil with 4.0mm thickness and 1600mm width for our seawater desalination plant construction. Quality assessment was thorough - material certificates showed molybdenum content at 2.4%, chromium at 17.2%, and nickel at 11.8%, all within ASTM A240 specifications. We conducted independent corrosion testing in 3.5% NaCl solution at 60°C for 720 hours with zero pitting observed, confirming excellent chloride resistance. Surface finish was uniform 2D with consistent grain structure visible under microscopic examination. The coils demonstrated superior formability during our press brake operations with no cracking at 90-degree bends. This is our 2nd major order for critical desalination applications. Performance in high-salinity environments has been flawless. Highly recommended for marine and coastal industrial projects.

Wei Chen

Singapore

verified purchases

2025-11-22

Reliable Long-term Partner for Hot Rolled Stainless
Long-term partner for hot rolled stainless steel coils. This is our 11th order over the past 18 months totaling 95 tons. Consistency has been remarkable - every shipment maintains the same quality standards with chemical composition variations within 0.01% across different heats, demonstrating excellent mill process control. Their inventory management system allows us to place smaller 5-ton orders as needed rather than bulk purchasing, significantly improving our cash flow. The technical team proactively notifies us of mill production schedules, helping us plan orders during optimal pricing windows. They've also accommodated custom slitting to our specific widths (1250mm, 1400mm) with edge quality suitable for direct forming without additional processing. Looking forward to continued partnership as we expand into new Southeast Asian markets.

Hans Mueller

Germany

verified purchases

2025-12-08

Good Value 304L Coils for Food Equipment
Good value for the price. We compared quotes from 6 suppliers across Europe and Asia, and their price was 8% lower than European mills while maintaining comparable quality standards with full ASTM A240 compliance. The 304L hot rolled coils (2.5mm thickness, 1200mm width) met our food-grade requirements with proper surface finish. Minor issue was thickness tolerance at upper limit of ±0.014 inches in two spots, requiring slight adjustment in our forming dies. However, their technical support helped us optimize our process parameters. Overall, solid supplier for cost-sensitive projects where slight tolerance variations are manageable. 4 stars because thickness consistency could be tighter, but considering the 12% cost savings versus local suppliers, it's acceptable for our production volume.

Michael Johnson

United States

verified purchases

2025-12-23

Outstanding Service and Quality 316L Coils
Excellent service experience from inquiry to delivery. Communication was exceptional - technical team responded within 2 hours with detailed grade recommendations comparing 316 vs 316L for our marine environment application, including specific chloride resistance data. They provided comprehensive material datasheets and previous case studies from similar offshore projects. Delivery exceeded expectations - promised 7-10 days but received our 8-ton order in just 5 days with full EN 10204 3.1 certificates. Packaging was professional grade with waterproof VCI wrapping, wooden crating, and steel banding that ensured zero transit damage. Each coil was individually labeled with heat numbers matching MTR documentation. Their proactive communication included shipment photos and tracking updates. Will definitely use them for our upcoming platform expansion project.

James Wilson

United Kingdom

verified purchases

2026-01-07

Excellent 304 Hot Rolled Coils for Chemical Tank Project
We ordered 12 tons of 304 hot rolled stainless steel coil (3.0mm thickness, 1500mm width) for our chemical storage tank fabrication. Material certificates showed carbon content at 0.062%, fully compliant with ASTM A240. We conducted tensile testing and yield strength was 235 MPa, exceeding minimum requirements. Surface finish was consistent No.1 finish with uniform pickling and no visible scale residue. The coils arrived with excellent edge quality, minimal burring which saved us significant decoiling time. Delivered in 6 days, matching their promised timeline. This is our 4th order from this supplier. Quality has been consistently excellent across all shipments. Highly recommended for chemical processing applications requiring corrosion resistance.