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304 Stainless Steel Sheet 0.349" x 21" x 21" | Industrial Grade

Expert Overview

This 0.349" thick 304 stainless steel stock sheet offers superior corrosion resistance and durability. Precisely cut to 21" x 21", it's engineered for demanding shipping, packaging, and fabrication needs.

StandardASTM A106
Material304 Stainless Steel
FinishZinc Plated
GradeN/A
Thickness0.349"
Length21"
Width21"

Detailed Engineering Specifications

Manufactured under strict quality controls, this 304 stainless steel sheet exhibits excellent tensile strength and formability, essential for robust construction. Its inherent passivation layer provides exceptional resistance to rust, oxidation, and chemical attack, making it ideal for corrosive environments. The precise dimensions of 0.349" thickness, 21" length, and 21" width ensure consistent performance in high-impact packaging solutions, protective barriers, and custom industrial fabrication projects where reliability is paramount.

🧊 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 the work area is clean and free of debris. 2. Position the 304 stainless steel sheet in the desired location. 3. Secure the sheet using appropriate fasteners or welding techniques as per application requirements.

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 incorrect fasteners that can lead to galvanic corrosion with stainless steel.Employ fasteners made from compatible materials such as 316 stainless steel or other corrosion-resistant alloys.
Applying excessive heat during welding, which can compromise the stainless steel's corrosion resistance.Utilize proper welding procedures for stainless steel, including appropriate filler metals and controlled heat input, followed by post-weld passivation if necessary.

Common Applications

  • Heavy-duty protective packaging barriers
  • Industrial component fabrication
  • Corrosion-resistant liners and casings

⚠️ Engineering Warnings

  • Always wear appropriate personal protective equipment (PPE) when handling metal sheets, including safety glasses and gloves.
  • Be aware of sharp edges; handle with caution to prevent cuts.

Alternative Products to Consider

Premium Shipping & Packaging equivalentHigher corrosion resistance (316 SS)
Economy Shipping & Packaging 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-duty protective packaging barriers, Industrial component fabrication, Corrosion-resistant liners and casings.

Technical Schematic

ISOMETRIC CAD ENVELOPEStandard Bounding Box representationH: HL: 21"W: 21"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.