HRS Ferritic · Certified Supplier & Stockist
SS 431 / AISI 431 Coils
Exporter / Importer / Supplier
Martensitic Stainless Steel · High Tensile Strength · Excellent Corrosion Resistance · Heat Treatable · Durable
ASTM A240 / AISI 431
UNS S43100
EN 1.4057
SUS 431
📋 Table of Contents
HRS Ferritic · SS 431 Coils Supplier & Stockist
SS 431 Coils / AISI 431 Coils
Exporter / Importer / Supplier
HRS Ferritic is a trusted name in the global stainless steel industry, delivering high-performance materials engineered for strength, durability, and precision. As a reliable SS 431 Coils / AISI 431 Coils Supplier, SS 431 Coils Stockist, and SS 431 Coils Importer, we source materials only from valuable and certified mills to ensure consistent quality and international compliance. Our commitment to innovation, customer satisfaction, and timely delivery makes us a preferred partner across diverse industrial sectors.
- Chromium forms a passive oxide layer for corrosion resistance
- Heat treatment improves mechanical performance
- Coil form allows easy fabrication and uniform stress distribution
- Suitable for high stress and corrosive environments
- Martensitic microstructure for hardness and strength
- High strength-to-weight ratio for aerospace needs
431Martensitic Grade
Grade Overview
What are SS 431 Coils / AISI 431 Coils?
SS 431 Coils / AISI 431 Coils are martensitic stainless steel coils known for their excellent corrosion resistance, high tensile strength, and good toughness. AISI 431 contains higher chromium content compared to other martensitic grades, which significantly enhances its resistance to atmospheric and mild chemical corrosion. These coils are heat-treatable and widely used in applications requiring high mechanical strength along with moderate corrosion resistance.
15.0–17.0%
Chromium Content
Martensitic
Microstructure
850–1000
Tensile Strength MPa
0.5–100
Thickness Range mm
Composition Analysis
Metallurgical Characteristics of SS 431 Coils
The unique balance of alloying elements allows for superior mechanical properties after quenching and tempering.
Fe
Iron
Base metal providing strength and structural support.
Cr
Chromium
Enhances corrosion and oxidation resistance.
Ni
Nickel
Improves toughness and corrosion resistance.
C
Carbon
Increases hardness and strength through heat treatment.
Mn
Manganese
Improves toughness and hot working properties.
Si
Silicon
Enhances strength and oxidation resistance.
S
Sulfur
Improves machinability (kept controlled).
Technical Data
Specifications for SS 431 Coils / AISI 431 Coils
ASTM A240 / AISI 431 · UNS S43100 · EN 1.4057 · JIS SUS 431
| Specification | Details |
|---|---|
| ASTM / AISI | ASTM A240 / AISI 431 (Plate, Sheet, and Strip) |
| UNS | UNS S43100 |
| EN | EN 1.4057 |
| DIN | 1.4057 |
| ISO | ISO X17CrNi16-2 |
| JIS | SUS 431 |
| Product Form | Coils / Sheets / Plates |
| Thickness Range | 0.5 mm to 100 mm |
| Standard Widths | 1000 mm, 1219 mm, 1250 mm, 1500 mm, 1800 mm, 2000 mm, 2500mm, 3000mm, 3500mm, etc |
| Standard Lengths | 2000 mm, 2440 mm, 2500 mm, 3000 mm, 5800 mm, 6000mm, etc |
| Custom Width Cut | Available as per customer requirement |
| Custom Length Cut | Available as per customer requirement |
| Surface Finish | Hot Rolled (HR), Cold Rolled (CR), Annealed & Pickled (AP) |
| Supply Condition | Solution Annealed |
| Cutting Methods | Plasma, Laser, Waterjet, Oxy Propane |
| Packaging | Bundled, Wooden Plates, Bubble wraps, Customized |
Inventory
Available Stock & Product Forms
Coils & Strips
Slitting coils, perforated coils, and thin foils from 0.05 mm.
Flat Products
Precision sheets, heavy plates, and shim sheets in AISI 431.
Speciality Forms
Circles, rings, custom-cut blanks, and chequered tread plates.
Edge Conditions
Mill edge, slit edge, round edge, and square edge finishes.
Chromium (Cr)
15.0 – 17.0% — High content for enhanced atmospheric resistance.
Carbon (C)
0.12 – 0.20% — Optimized for high hardness after treatment.
Nickel (Ni)
1.25 – 2.50% — Essential for improved toughness and ductility.
Manganese (Mn)
≤ 1.00% — Enhances hot working properties and strength.
Tensile Strength
850 – 1000 MPa — Exceptional strength for high-stress use.
Yield Strength
≥ 650 MPa — Reliable performance in structural applications.
Elongation
15% — Adequate ductility for demanding mechanical parts.
Hardness
260 – 320 HB — High surface durability and wear resistance.
Product Range
Types of SS 431 Coils / AISI 431 Coils
As a leading supplier, we maintain various heat-treated and precision-finished coils for immediate dispatch.
Hot Rolled SS 431 Coils
Cold Rolled SS 431 Coils
Annealed SS 431 Coils
Tempered SS 431 Coils
Precision SS 431 Stainless Steel Coils
Application Sectors
Industries We Serve
Sugar Industry
Global cane and beet processing requiring thermal endurance.
Power Industry
Electricity generation and distribution systems.
Ship Building
Marine propulsion and exhaust components.
Mechanical & Plant Engineering
Industrial machinery design solutions.
Food, Beverage & Dairy
Processed food manufacturing environments.
Oil & Gas Plant
Refinery furnace units and burner assemblies.
Chemical Composition
Chemical Property of SS 431 Coils / AISI 431 Coils
The high chromium and nickel content provides a unique martensitic structure with exceptional strength and corrosion resistance after heat treatment.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.12 – 0.20 |
| Chromium (Cr) | 15.0 – 17.0 |
| Nickel (Ni) | 1.25 – 2.50 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
Performance Data
Mechanical properties of SS 431 Coils / AISI 431 Coils
850 – 1000
Tensile Strength
MPa — Exceptional structural integrity for precision engineering
≥ 650
Yield Strength
MPa — Superior resistance to deformation under load
15%
Elongation
Stable ductility for machined and formed parts
260 – 320
Hardness (HB)
Excellent wear resistance and surface durability
Excellent
Impact Resistance
Performs reliably under cyclic and dynamic loads
Cost Information
Price Lists of SS 431 Coils / AISI 431 Coils
Price Factors
Factors that Affect the Price of SS 431 Coils
- Raw material (Nickel & Chromium) price fluctuations
- Coil thickness and width
- Surface finish and heat treatment
- Import duties and logistics
- Order quantity and delivery schedule
International Standards
Equivalent Grades for SS 431 Coils / AISI 431 Coils
Global metallurgical designations for SS 431 across major international standards.
| Standard / Country | Grade / Designation |
|---|---|
| AISI (USA) | 431 |
| SAE (USA) | 431 |
| UNS (USA) | S43100 |
| EN (Europe) | 1.4057 |
| EN Name | X17CrNi16-2 |
| DIN (Germany) | X17CrNi16-2 |
| BS (United Kingdom) | 431S29 |
| JIS (Japan) | SUS 431 |
| ISO | X17CrNi16-2 |
| AFNOR (France) | Z15CN16-02 |
| UNI (Italy) | X17CrNi16-2 |
| GOST (Russia) | 14Х17Н2 |
| SS (Sweden) | 2321 |
| KS (Korea) | STS 431 |
| IS (India) | X17CrNi16-2 |
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Ready Stock Availability & Product Forms
- Flat Products: Precision sheets, heavy plates, shim sheets
- Coils & Strips: Slitting coils, perforated coils, thin foils (from 0.05 mm)
- Speciality Forms: Circles, rings, custom-cut blanks, chequered plates
- Edge Conditions: Mill edge, slit edge, round edge, square edge
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Quality Assurance & Global Logistics
- Testing: PMI, Ultrasonic Testing (UT), Radiography (RT), corrosion testing
- Certification: EN 10204 3.1 / 3.2, NACE compliance (on request)
- Global Supply: USA, UAE, Saudi Arabia, Singapore, Indonesia, Europe
- Export Packaging: ISPM-15 fumigated crates, shrink-wrapped & moisture-protected
Use Cases
Applications and Importance of SS 431 Coils
🌾 Fertilizer Industry
Pressure vessels, agitator shafts, and rotary equipment for ammonia and nitrates.
🧪 Chemical Processing
Heat exchanger plates, valve components, pump shafts, and impellers.
✈️ Aerospace
Aircraft structural fittings, landing gear components, actuator parts, and fasteners.
⛽ Oil & Gas
Drill collars, valve stems, compressor shafts, and downhole tool components.
💊 Pharmaceuticals
Equipment housings, drive shafts, and support structures needing mechanical integrity.
🏗️ Construction
Load-bearing brackets, structural reinforcements, anchors, and architectural fittings.
⚡ Electric Sector & EV
Battery enclosures, structural frames, mounting brackets, and protective casings.
🚗 Automotive
Transmission components, gears, axles, crankshafts, and high-stress engine parts.
Why HRS Ferritic
Why choose HRS Ferritic for SS 431 Coils / AISI 431 Coils?
HRS Ferritic is committed to delivering excellence in stainless steel solutions. With years of industry expertise, we stand as a dependable SS 431 Coils / AISI 431 Coils Supplier, Importer, and Stockist for clients worldwide.
Trusted SS 431 Coils / AISI 431 Coils Stockist
Sourcing from valuable and certified mills
Competitive pricing & bulk supply capability
Custom sizes and finishes available
Fast delivery and reliable global logistics
Dedicated technical and sales support
Mill test certificates with every shipment
Industry-leading expertise as an Importer
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Cities We Supply In India
New Delhi · Ahmedabad · Jaipur · Surat · Salem · Gandhinagar · Varanasi · Haldia ·
Bhiwandi · Tiruppur · Jamnagar · Thiruvananthapuram · Rajahmundry · Visakhapatnam · Bhubaneswar ·
Vijaywada · Rajkot · Bharuch · Coimbatore · Nagpur · Raipur · Cochin · Ludhiana · Panipat · Durgapur ·
Agra · Indore · Kuala Lumpur · Al Jubail · Pimpri-Chinchwad · Sharjah · Karachi · Chandigarh · Bogota · Muscat · Madrid · Tehran · Granada · Jakarta · Los Angeles · Rio de Janeiro · Melbourne · Cairo · New York · Busan · Milan · Montreal · Singapore · Sydney · Dubai · Lagos · Gurgaon · Port-of-Spain · Hong Kong · Navi Mumbai · Secunderabad · Bangkok · Aberdeen · Bhopal · Atyrau · Caracas · Jamshedpur · Thane · Faridabad · Ahvaz · Ahmedabad · Hanoi · Bengaluru · Dallas · Moscow · Surat · Riyadh · Rajkot · Al Khobar · Hyderabad · Haryana · Ernakulam · Gimhae-si · Algiers · Thiruvananthapuram · Brisbane · Calgary · Mumbai · Chennai · Courbevoie · Toronto · Vung Tau · Ankara · Doha · Nagpur · Howrah · Ranchi · Perth · Noida · Houston · Kolkata · Chiyoda · Mexico City · Edmonton. Geoje-si · Abu Dhabi · Santiago · New Delhi · Colombo · Ludhiana · Lahore · Coimbatore · Ho Chi Minh City · Manama · Ulsan · London · Visakhapatnam · Jaipur · Kuwait City · Seoul · Istanbul · Pune · Baroda · Kanpur · La Victoria · Jeddah · Dammam · Petaling Jaya · Nashik · Vadodara ·jamnagar ·hazira · jubail industrial city · Ajman · Capetown · San Francisco · sao paulo · Barcelona · Ahmedi · Muscat · Madrid · Birmingham · Johannesburg.
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Countries We Export To
Saudi Arabia · Qatar · Canada · Sri Lanka · Iran · Nigeria · Bangladesh · Oman · UAE ·
Turkey · Kuwait · Venezuela · Africa · Singapore · Netherlands · United Kingdom · Mexico · Malaysia ·
United States · Australia · Japan Saudi Arabia · Iran · Iraq · UAE · Qatar · Bahrain · Oman · Kuwait · Turkey · Yemen · Syria · Jordan · Cyprus · Nigeria · Algeria · Angola · South Africa · Libya · Egypt · Sudan · Equatorial Guinea · The Republic Of Congo · Gabon · USA · Canada · Mexico · Panama · Costa Rica · Puerto Rica · Trinidad And Tobago · Jamaica · Bahamas · Denmark · Russia · Norway · Germany · France · Italy · Uk · Spain · Ukraine · Netherland · Belgium · Greece · Czech Republic · Portugal · Hungary · Albania · Austria · Switzerland · Slovakia · Finland · Ireland · Croatia · Slovenia · Malta · India · Singapore · Malaysia · Indonesia · Thailand · Vietnam · South Korea · Japan · Sri Lanka · Maldives · Bangladesh · Myanmar · Taiwan · Cambodia · Argentina · Bolivia · Brazil · Chile · Venezuela · Colombia · Ecuador · Guyana · Paraguay · Uruguay · New Zealand · Romania · Puerto Rico · Nepal · Kenya · Afghanistan · Lithuania · Belarus · Zimbabwe · Israel · Azerbaijan · Poland · Australia · Morocco · Philippines.
Support
Frequently Asked Questions
Quick answers to common queries about SS 431 Coils / AISI 431 Coils.
Larger widths and customized lengths of SS 431 Coils require more rolling capacity, handling, and transportation, which increases the overall price.
Thicker AISI 431 Coils consume more raw material and weigh more, resulting in higher production and freight costs.
Finishes such as hot rolled, annealed, pickled, or polished involve additional processing, labour, and chemical use, raising the final cost.
Yes, changes in chromium, nickel, and steel scrap prices directly influence manufacturing expenses and, therefore, the market price of AISI 431 Coils.
SS 431 Coils are widely used in marine, chemical, and petrochemical industries for pumps, valves, shafts, and fasteners due to their excellent corrosion resistance and high strength.
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