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304 Stainless Steel Sheet | 0.405" x 39" x 20" | Heavy Duty

Expert Overview

This 304 stainless steel stock sheet is engineered for robust performance in demanding environments. Its substantial thickness and high-grade material ensure exceptional durability and longevity for critical structural and fabrication needs.

StandardASTM A106
Material304 Stainless Steel
FinishPassivated
GradeN/A
Thickness0.405"
Length39"
Width20"

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this 304 stainless steel stock sheet offers superior mechanical strength and exceptional resistance to corrosion, pitting, and crevice corrosion, even in aggressive environments. The 0.405" thickness provides significant rigidity for structural components, machine bases, and protective barriers. Manufactured to exacting standards, its 304 (UNS S30400) composition, with a minimum chromium content of 18% and nickel of 8%, ensures excellent weldability and formability for complex fabrications. Ideal for chemical processing equipment, food service applications, marine hardware, and architectural elements.

🧊 Download 3D CAD Model (.STEP)

Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

3MEst. 1902
USA🇺🇸
"Science applied to life."
Market Rank
🏆 Global Innovation Leader
Industry Approvals
🚀 Aviation & Medical Approved
Warranty & Support
🛡️ Premium Performance Guarantee
Green Manufacturing
🌱 100% Renewable Energy HQ
Certified:ISO 9001, ISO 14001
LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
Market Rank
🏆 #1 Global Adhesives
Industry Approvals
🚀 Formula 1 & Aerospace OEM
Warranty & Support
🛡️ 24/7 Application Support
Green Manufacturing
🌱 Climate Positive 2030
Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
Market Rank
🏆 #1 Industrial Supply Standard
Industry Approvals
🚀 US Military Approved
Warranty & Support
🛡️ Lifetime Return Policy
Green Manufacturing
🌱 Sustainable Logistics
Certified:ISO 9001 Compliant

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:Yes

Installation Procedure

1. Ensure all surfaces are clean and free of contaminants. 2. Fabricate or form the sheet according to design specifications using appropriate tooling. 3. Secure the fabricated component using approved welding, fastening, or bonding methods, considering material compatibility.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°C)
Thermal Expansion
Typical for Material Class

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
StandardVaries by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using inadequate cutting tools for the 0.405" thickness, leading to poor edge quality or tool damage.Employ heavy-duty cutting tools specifically designed for thick stainless steel, such as abrasive saws with appropriate blades or waterjet cutting services.
Improper welding procedures that can lead to sensitization and reduced corrosion resistance.Utilize TIG or MIG welding with appropriate filler materials (e.g., 308L) and maintain interpass temperatures below 300°F (150°C). Post-weld cleaning and passivation are recommended.

Common Applications

  • Heavy Equipment Fabrication
  • Industrial Machine Guarding
  • Chemical Processing Tanks & Vessels
  • Marine Structures & Components
  • Architectural Cladding & Support

⚠️ Engineering Warnings

  • Handle with care to prevent scratches and dents, which can compromise surface integrity.
  • Always use appropriate personal protective equipment (PPE) when cutting, grinding, or welding stainless steel.

Alternative Products to Consider

Premium Hardware equivalentHigher corrosion resistance (316 SS)
Economy Hardware optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the 304 Stainless Steel Stock Sheet made from?

A: This 304 Stainless Steel Stock Sheet is manufactured from 304 Stainless Steel.

Q: What are the main applications?

A: Heavy Equipment Fabrication, Industrial Machine Guarding, Chemical Processing Tanks & Vessels, Marine Structures & Components, Architectural Cladding & Support.

Technical Schematic

ISOMETRIC CAD ENVELOPEStandard Bounding Box representationH: HL: 39"W: 20"GENERAL COMPONENT304 Stainless Steel Stock Sheet

Torque Specifications

⚡ UNIT CONVERTER

Conversion factor: 1 ft-lb ≈ 1.356 Nm

Verified Compatibility

StatusMating ComponentStandardTorque SpecEngineering Notes
No verified compatibility data found for this component.