301 Stainless Steel Coil

Shaanxi Shangyou Stainless Steel Co., Ltd. supplies 301 stainless steel coil and precision strip in annealed and cold-worked tempers, including 1/4 hard, 1/2 hard, 3/4 hard and full hard conditions.

AISI 301, also identified as UNS S30100 and EN 1.4310, is an austenitic chromium-nickel stainless steel with particularly high work-hardening capacity. It can obtain substantially increased tensile and yield strength through controlled cold rolling, making it suitable for springs, clips, clamps, gaskets, conveyor components and other parts exposed to repeated mechanical loading.

• Annealed to full hard temper options
• High strength developed through cold working
• Custom slit width and coil weight
• Mill edge, slit edge, deburred or rounded edge
• 2B, BA and temper-rolled surface options
• Tensile strength and hardness verification
• EN 10204 3.1 material certificate
• Export seaworthy packing

RFQ Information:
Send the required standard, temper, thickness, width, edge condition, surface finish, coil ID, tensile strength, hardness, quantity and end application for technical review and quotation.

301 stainless steel is an austenitic stainless steel with a nominal composition of approximately 17% chromium and 7% nickel. Compared with the more stable 304 grade, its lower chromium and nickel content gives 301 a less stable austenitic structure and a stronger response to cold deformation.

During cold rolling or forming, part of the austenitic structure can transform into strain-induced martensite. This transformation produces rapid work hardening, higher strength and increased magnetic response. Properly annealed 301 is essentially austenitic, while heavily cold-worked material can become noticeably magnetic.

This combination makes 301 particularly suitable where the buyer requires:

• Higher strength than annealed 304
• Spring performance and elastic recovery
• Thin-gauge components with high load capacity
• Good ductility before cold working
• Decorative metallic appearance
• Reduced component weight through thinner material

301 is not hardened by conventional heat treatment. Its high-strength conditions are primarily obtained through controlled cold reduction.

Availability depends on thickness, width, temper, tensile-strength range and minimum order quantity. Extremely thin strip and tightly controlled spring temper should be reviewed according to the customer’s drawing and performance requirements.

ASTM A240/A240M covers chromium, chromium-nickel and chromium-manganese-nickel stainless steel plate, sheet and strip for pressure-vessel and general applications. It specifies chemical composition and mechanical-property requirements for the material covered by the purchase order.

ASTM A666/A666M is particularly relevant when 301 is ordered in annealed or cold-worked conditions. It covers austenitic stainless steel sheet, strip, plate and flat bar and includes requirements for tensile strength, yield strength, elongation, hardness and bend performance.

For European projects, 301 is commonly identified as EN 1.4310. The required delivery condition may be specified using EN strength classifications or a defined proof-strength and tensile-strength range.

Specifying ASTM A666 material does not automatically qualify a cold-worked coil for pressure-vessel construction. Pressure-equipment acceptance must be checked against the applicable design code, material condition, standard edition and project specification. ASTM notes that only annealed conditions of specifically approved grades are permitted for pressure-vessel use under the relevant ASME provisions.

The following limits are representative of current ASTM-listed 301 material. The final chemical composition must be verified against the applicable standard edition and the supplied material certificate.

The chromium and nickel balance supports an austenitic structure in the annealed condition while allowing strong work hardening during cold reduction.

301 stainless steel can be supplied in different cold-worked conditions. The required temper should be selected according to the part geometry, forming operation, spring force, fatigue requirement and final dimensional tolerance.

The following values are reference minimum room-temperature properties associated with ASTM A240 and ASTM A666 material conditions. Final acceptance must follow the purchase order, standard edition, thickness range and certified test results.

Elongation requirements can vary with material thickness and the applicable specification.

These hardness figures are typical reference values rather than universal acceptance limits. The buyer should define whether the order is controlled by temper designation, tensile-strength range, yield strength, hardness or a combination of properties.

Best suited to components requiring substantial forming, drawing or stamping before final work hardening.

• Deep-formed components
• Decorative trim
• General stamped parts
• Components requiring multiple forming stages

Provides increased strength while retaining useful forming capability.

• Light spring clips
• Flexible brackets
• Clamps
• Formed covers
• Structural trim

Offers a practical balance between high strength, spring response and limited forming capability.

• Spring washers
• Retaining clips
• Hose clamps
• Conveyor components
• Electrical contact parts

Selected for higher-strength spring parts where forming is relatively limited.

• High-load clips
• Precision spring parts
• Reinforcing components
• Thin structural components

Used when maximum commercially standardized strength is required and the component requires only limited bending or forming.

• Flat springs
• Constant-force spring components
• High-strength shims
• Precision stampings
• Load-bearing thin sections

“Full hard" does not describe one universal tensile value for every thickness and specification. The required tensile-strength range, hardness, direction of testing and tolerances should be stated on the purchase order.

The main advantage of 301 is its ability to develop high tensile and yield strength through cold rolling. Outokumpu classifies 301/1.4310 as a high-work-hardening stainless steel intended for components exposed to high mechanical loading.

This characteristic allows manufacturers to produce thinner parts while retaining stiffness and load capacity. However, it also means that forming force, tooling wear and springback can be higher than with more stable austenitic grades.

301 provides useful resistance to atmospheric corrosion and many mild industrial environments. However, its general corrosion resistance is below that of conventional 18-8 grades such as 304 because of its lower chromium and nickel content.

It is not the preferred grade for:

• Marine splash zones
• Chloride-rich environments
• Strong reducing chemicals
• Continuously wet chemical equipment
• Heavily welded components exposed to corrosive media

ATI notes that 301 is more susceptible to carbide precipitation during welding and may be replaced by 304 or 304L when welded corrosion resistance is important.

Annealed 301 is normally close to non-magnetic. Cold working promotes martensite formation and increases magnetic permeability. Therefore, a magnet test cannot be used as a reliable grade-verification method for cold-rolled 301.

For applications requiring tightly controlled magnetic permeability, the buyer should specify:

• Maximum permeability
• Material temper
• Cold-reduction level
• Measurement method
• Testing direction
• Acceptance temperature

Cold rolling can improve the fatigue endurance of 301 compared with the annealed condition. This is one reason the grade is frequently selected for springs and cyclically loaded components. Actual fatigue life remains dependent on surface condition, edge quality, stress concentration, forming radius, residual stress and operating environment.

Choose 301 when high strength, elastic recovery and work-hardening response are the primary design requirements.

Choose 304 or 304L when corrosion resistance, welding performance and general fabrication are more important than maximum cold-worked strength. ATI identifies 301 as having lower corrosion performance than 18-8 chromium-nickel stainless steels, while Outokumpu describes 301/1.4310 as a high-work-hardening grade for mechanically loaded parts.

A smooth, cold-rolled and annealed surface suitable for general stamping, forming and industrial components.

A bright-annealed surface used when improved appearance, cleanliness or reflectivity is required.

A work-hardened finish associated with controlled cold rolling. Mechanical properties should be specified together with the required strength class or temper.

No.4, brushed and other polished finishes may be supplied for decorative or visible components. Polishing requirements should identify the target roughness, direction and acceptable appearance standard.

PE or PVC protective film can be applied to help reduce scratching during cutting, stamping, transport and assembly.

Edge condition has a direct effect on spring fatigue, stamping performance and operator safety.

Available edge options include:

• Mill Edge: Original edge from the rolling process
• Slit Edge: Standard rotary-slit edge
• Deburred Edge: Reduced burr for handling and stamping
• Rounded Edge: Edge-conditioned profile for spring and precision applications
• Special Edge: Produced according to drawing or approved reference sample

For precision spring strip, the inquiry should identify:

• Maximum edge burr
• Burr orientation
• Edge radius
• Camber tolerance
• Width tolerance
• Flatness requirement
• Surface-defect acceptance
• Grain or rolling direction

Shaanxi Shangyou Stainless Steel Co., Ltd. provides processing according to coil size and downstream manufacturing requirements.

• Precision coil slitting
• Cut-to-width strip
• Cut-to-length sheet
• Coil leveling
• Edge deburring
• Rounded-edge processing
• Surface polishing
• Protective film application
• Paper interleaving
• Custom coil weight
• Export packing

For spring and stamping applications, a trial order or sample approval is recommended when the customer requires a narrow tensile-strength range, strict flatness, low camber or controlled edge profile.

301 has good forming capability in the annealed condition, but work hardens rapidly. Progressive forming operations may require:

• Higher forming force
• Larger forming radii
• Springback compensation
• Robust tooling
• Controlled lubrication
• Intermediate annealing for severe forming

The required temper should be chosen based on the forming operation rather than strength alone.

Springback increases as material strength and temper increase. Tool design should be validated using material from the intended production temper and thickness, not only nominal grade data.

301 can be welded using conventional stainless steel welding processes. However, welding can reduce locally cold-worked strength and may create heat-affected areas with different mechanical and corrosion behavior.

For welded components used in corrosive service, evaluate:

• Heat input
• Joint design
• Filler selection
• Sensitization risk
• Post-weld cleaning
• Final corrosion requirement

Where extensive welding and corrosion resistance are both critical, 304L may be a more suitable material choice.

301 is not strengthened by quench-and-temper heat treatment. Strength is obtained through cold working.

A reference solution-annealing range is approximately 1,010–1,121°C, followed by sufficiently rapid cooling to minimize carbide precipitation. Heat treatment should be performed under a qualified procedure appropriate to the material thickness and final application.

301 stainless steel coil and strip are commonly used for:

• Flat springs
• Spiral springs
• Retaining springs
• Constant-force spring parts
• Spring washers
• Electrical spring contacts

• Automotive trim
• Cylinder and head gaskets
• Hose clamps
• Rail and subway components
• Truck and trailer body parts
• Lightweight structural components

• Conveyor belts
• Conveyor chains
• Mixer blades
• Press plates
• Flexible couplings
• Precision shims

• Kitchen equipment
• Decorative trim
• Clips and fasteners
• Roof drainage components
• Formed covers and enclosures

Springs, conveyor components, mixer blades, automotive parts, gaskets, railway components and hose clamps are among the applications identified by ATI and Outokumpu for 301 stainless steel.

• Heat number and coil traceability
• Material certificate review
• Chemical composition verification
• OES analysis when carbon confirmation is required
• XRF PMI for alloy screening

XRF PMI can identify major elements such as chromium and nickel, but it cannot independently confirm carbon content or mechanical temper. Final verification of 301 temper requires tensile, yield, elongation or hardness testing according to the purchase specification.

• Tensile strength
• Yield strength
• Elongation
• Rockwell or Vickers hardness
• Bend testing when specified
• Spring performance testing by agreement

• Thickness
• Width
• Coil ID
• Coil weight
• Camber
• Flatness
• Edge burr
• Surface condition

• Scratches
• Dents
• Roll marks
• Oxide
• Edge damage
• Surface roughness
• Finish consistency

• EN 10204 3.1 MTC
• Chemical analysis report
• Mechanical-property report
• Dimensional inspection report
• Hardness report
• Packing list
• Certificate of origin
• Third-party inspection report when requested

301 stainless steel coil can be packed according to coil weight, transport method and destination-port requirements.

• Waterproof paper wrapping
• Protective plastic film
• Steel sheet outer protection
• Inner and outer edge protectors
• Steel strapping
• Wooden pallet or steel skid
• Heat number and shipping marks
• Moisture protection
• Container blocking and reinforcement

Narrow precision strip can be supplied with:

• Eye-to-sky or eye-to-wall packing
• Individual coil separation
• Paper interleaving
• Wooden cases
• Fumigated wooden packing where required

We review the application, forming method and target mechanical properties before confirming the suitable 301 condition.

Coils can be slit to the required width with controlled edge condition, burr direction and coil weight.

Tensile strength, yield strength, elongation and hardness can be tested according to the agreed purchase specification.

Each shipment can be supplied with heat-number traceability and EN 10204 3.1 material documentation.

Packing is selected according to coil geometry, unloading conditions, shipping route and destination requirements.

To receive an accurate quotation, provide:

1. Grade: AISI 301 / UNS S30100 / EN 1.4310
2. Standard: ASTM A240, ASTM A666 or EN 10088-2
3. Temper or required tensile-strength range
4. Thickness and tolerance
5. Width and tolerance
6. Edge condition
7. Surface finish
8. Coil ID and maximum coil OD
9. Coil weight
10. Quantity
11. End application
12. Required certificates and inspection

For spring components, also provide the required hardness, bending direction, forming radius, spring force, fatigue requirement and edge-burr limit.

Yes. Its high work-hardening rate allows 301 to achieve high tensile and yield strength through cold rolling, making it widely used for flat springs, retaining clips and other elastic components. The correct temper must be selected according to the required forming and spring performance.

Half hard retains more elongation and forming capability. Full hard provides higher strength and hardness but allows less bending and forming. The purchase order should specify the required mechanical-property range rather than relying only on the temper name.

Annealed 301 is normally close to non-magnetic. Cold rolling and forming can produce strain-induced martensite, causing the material to become magnetic.

No. 304 generally provides better corrosion resistance. 301 is normally selected because it develops higher strength through cold working.

Yes, but welding can change the mechanical properties around the joint and may increase sensitization concerns. For heavily welded components in corrosive service, 304L may be a better choice.

No. 301 is primarily hardened through cold working. Solution annealing softens the material and restores ductility.

ASTM A666/A666M is commonly used for annealed and cold-worked austenitic stainless steel sheet and strip. The order should also state the temper, tensile range, thickness, edge and dimensional tolerances.

No. XRF can screen major alloying elements but cannot verify temper, tensile strength or hardness. Mechanical testing is required to confirm the supplied condition.

Yes. Coil slitting, edge deburring and customized coil weight are available according to thickness, width tolerance and order quantity.

Provide the grade, standard, temper, thickness, width, edge profile, tensile-strength range, hardness, forming direction, coil ID, quantity and final spring application.

Shaanxi Shangyou Stainless Steel Co., Ltd. supplies 301 stainless steel coil and precision strip for springs, clips, clamps, gaskets, conveyor components and high-strength stamped parts.

• Temper or tensile-strength range
• Thickness and width
• Edge condition
• Surface finish
• Coil ID and coil weight
• Quantity
• End application
• Required inspection documents

Company:
Shaanxi Shangyou Stainless Steel Co., Ltd.