HRS Ferritic · Trusted Supplier, Importer & Stockist

Stainless Steel 431 Plate
AISI 431 Plate

Martensitic Grade · High Chromium & Nickel · Superior Strength & Toughness · Marine & Structural Applications · Global Supply

ASTM A240 / AISI 431 UNS S43100 EN 1.4057 JIS SUS 431
📋 Table of Contents
1Introduction to SS 431 Plate
2Overview of SS 431 / AISI 431
3Metallurgical Characteristics
4Specifications
5Available Stock
6Types of SS 431 Plate
7Chemical Properties
8Mechanical Properties
9Pricing List
10Equivalent Grades
11FAQs
HRS Ferritic · SS 431 Plate Supplier, Importer & Stockist

Stainless Steel Plate 431
/ AISI 431 Plate

HRS Ferritic has a long-standing reputation in the stainless-steel industry, known for its high-performance stainless-steel grades. We are a trusted SS 431 Plate / AISI 431 Plate Supplier, Importer and Stockist. Our materials come from certified, valuable mills and comply with ASTM and AISI standards — offering reliable solutions for diverse industrial sectors with strong inventory and technical expertise.

  • High yield and tensile strength
  • Superior toughness vs. other martensitic grades
  • Excellent corrosion resistance in marine and atmospheric environments
  • Heat treatable for improved performance
  • Suitable for heavy-duty structural and mechanical applications
  • Nickel and chromium combined for enhanced toughness and ductility
Stainless Steel 431 Plate in India
17%Chromium Content
Grade Overview

Introduction to SS 431 Plates / AISI 431 Plates

SS 431 Plate is a high-chromium martensitic stainless steel combining strength, toughness and corrosion resistance — working well in mildly aggressive and marine environments. Heat-treated SS 431 has superior mechanical properties, making it suitable for structural and engineering applications requiring high-stress, high-pressure and high-impact performance.

17%
Chromium Content
Martensitic
Microstructure
850–1000
Tensile Strength MPa
0.5–100
Thickness Range mm
Composition Analysis

Metallurgical Characteristics of SS 431 Plate

Each element in SS 431 contributes to its unique combination of high strength, toughness and corrosion resistance in demanding environments.

Fe
Iron
Base metal providing strength and structural support.
Cr
Chromium
Enhances corrosion and oxidation resistance; high content distinguishes SS 431.
Ni
Nickel
Improves toughness and corrosion resistance; works with chromium for enhanced ductility.
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 to maintain toughness and corrosion resistance.
P
Phosphorus
Residual element controlled at low levels to prevent brittleness.
Technical Data

Specifications — SS 431 Plate / AISI 431 Plate

ASTM A240 · AISI 431 · UNS S43100

Specification Details
ASTM / AISI ASTM A240 / AISI 431 (Plate, Sheet, and Strip)
UNS UNS S43100
EN / DIN EN 1.4057 / 1.4057
ISO X17CrNi16-2
JIS SUS 431
Product Form Sheets / Plates
Thickness Range 0.5 mm to 100 mm
Standard Widths 1000, 1219, 1250, 1500, 1800, 2000, 2500, 3000, 3500 mm
Standard Lengths 2000, 2440, 2500, 3000, 5800, 6000 mm
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 Wrap, Customized
Inventory

Available Stock & Product Forms

🪨

Plates

High-quality flat plates in standard and custom thicknesses for structural and engineering use.

🔩

Annealed Plates

SS 431 annealed plates for optimal ductility and machinability.

🔥

Quenched & Tempered

Heat-treated plates for maximum strength and hardness performance.

✂️

Cut-to-Size

Custom-cut SS 431 plates with options for polished surface finish.

🧪

Chromium (Cr)

15.0–17.0% — High chromium for corrosion and oxidation resistance.

✨

Nickel (Ni)

1.25–2.50% — Key addition improving toughness and corrosion resistance.

⚫

Carbon (C)

≤ 0.20% — Enables heat treatment for high hardness and strength.

⚖️

Iron (Fe)

Balance — Structural base providing strength and support.

💪

Tensile Strength

850–1000 MPa — Exceptional for high-stress structural applications.

🎯

Yield Strength

≥ 650 MPa — High performance for engineering and marine applications.

📏

Elongation

15–20% — Good ductility for fabrication and forming.

🔬

Hardness

250–300 HB — High hardness for wear and impact resistance.

Product Range

Types of SS 431 Plate / AISI 431 Plate

A full range of SS 431 plate types to suit structural, engineering and marine application requirements.

Hot Rolled SS 431 Plates
SS 431 Plates Annealed
SS 431 Plates Quenched and Tempered
Polished SS 431 Plates
Custom Cut-to-Size SS 431 Plates
Application Sectors

Industries We Serve

Sugar
Sugar Industry
Global cane and beet processing requiring thermal endurance.
Power
Power Industry
Electricity generation and distribution systems.
Ship Building
Ship Building
Marine propulsion and exhaust components.
Mechanical
Mechanical & Plant Engineering
Industrial machinery design solutions.
Food
Food, Beverage & Dairy
Processed food manufacturing environments.
Oil Gas
Oil & Gas Plant
Refinery furnace units and burner assemblies.
Chemical Composition

Chemical Properties of SS 431 Plate / AISI 431 Plate

The combination of high chromium (15–17%) and nickel (1.25–2.50%) in SS 431 is unique among martensitic grades — delivering superior toughness and corrosion resistance in marine and atmospheric environments.

Element Composition (%)
Chromium (Cr) 15.0 – 17.0
Nickel (Ni) 1.25 – 2.50
Carbon (C) ≤ 0.20
Manganese (Mn) ≤ 1.00
Silicon (Si) ≤ 1.00
Phosphorus (P) ≤ 0.040
Sulfur (S) ≤ 0.030
Performance Data

Mechanical Properties of SS 431 Plate / AISI 431 Plate

850–1000
Tensile Strength
MPa — Exceptional for high-stress structural applications
≥ 650
Yield Strength
MPa — High performance for engineering and marine use
15–20%
Elongation
Good ductility for fabrication and forming
250–300 HB
Hardness
High hardness for wear and impact resistance
Cost Information

Price List for SS 431 Plate / AISI 431 Plate

Price Factors

What affects the price?

  • Market prices for nickel and chromium
  • Heat treatment requirements
  • Size and thickness of plates
  • Quantity of orders and delivery address
  • Import duties, logistics and other costs
Get A Quote
Get A Quote!
Competitive pricing · Bulk order benefits · Mill test certification · Complete traceability
📧 info@hrsferritic.com
International Standards

Equivalent Grades for SS 431 Plate / AISI 431 Plate

SS 431 is recognized across all major global standards with equivalent metallurgical designations.

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
📦
Ready Stock & 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 (tread) plates
  • Edge Conditions: Mill edge, slit edge, round edge, square edge
🏭
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 wooden crates, shrink-wrapped & moisture-protected
Use Cases

Importance and Applications of SS 431 Plate / AISI 431 Plate

✈️ Aerospace
Aircraft fittings, landing equipment, fasteners and structural brackets requiring high strength and durability.
⛽ Oil & Gas
Valves, pump shafts, drilling components, refinery gear and high-pressure parts.
🚗 Automotive
Axle components, drive shafts and transmission parts requiring high strength and wear resistance.
💊 Pharmaceuticals
Mixing blades and structural supports where strength and cleanliness are required.
🏗️ Construction & Infrastructure
Anchor plates, heavy-duty architectural components and structural load-bearing elements.
⚡ EV & Electrical
Motor shafts and generator components requiring mechanical strength and reliability.
🌾 Fertilizer Industry
High-strength shafts, agitator parts and pressure components exposed to moisture and mechanical stress.
🧪 Chemical Processing
Pump shafts, valves, reactor internals and pressure housings requiring moderate corrosion resistance.
Why HRS Ferritic

Why Choose HRS Ferritic's Stainless Steel 431 Plates?

HRS Ferritic is committed to delivering premium stainless steel solutions in global industries. As a leading SS 431 Plate / AISI 431 Plate Importer and Stockist, our products meet strict quality and performance requirements. Contact us to find the best price on SS 431 plates.

Reliable SS 431 Plate Supplier & Stockist
Sourced from certified and valuable manufacturers
Stocks ready to ship with customized sizes
Consistent quality and competitive pricing
Professional technical support
Timely delivery worldwide
On-time delivery, export-grade packaging
Supply to 20+ countries worldwide
🇮🇳

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 Stainless Steel 431 Plate / AISI 431 Plate.

SS 431 Plates are used for high-strength components such as pump shafts, valve parts, and aircraft fittings.
AISI 431 Plates provide high strength with good corrosion resistance for marine shafts and boat fittings.
Yes, they are ideal for turbines, compressor components, and high-load fasteners.
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