Material Certifications & Mill Test Reports (MTRs)

At JWM Metal Supply, we stand behind the quality and traceability of every piece of steel we sell.

Mill Test Reports (MTRs) are available for all materials we carry.

Whether you’re purchasing for structural fabrication, commercial construction, government projects, or engineered applications, we can provide material certification upon request.

What Is an MTR?

A Mill Test Report (MTR), also known as a Material Test Report or Mill Certification, is an official document issued by the producing mill that verifies:

Material grade (A36, A500, A513, etc.)
Chemical composition
Mechanical properties (yield strength, tensile strength, elongation)
Heat number / traceability information
Compliance with ASTM standards

MTRs confirm that the steel you receive meets the specified material standards.

Materials Covered

We provide MTRs for:

Structural steel plate
Square tubing (A500, A513 as applicable)
Rectangle tubing
Angle iron
Schedule 40 pipe
Flat bar
Round bar
Other structural steel products

If it ships from JWM Metal Supply, we can provide certification documentation.

How to Request an MTR

Requesting an MTR is simple:

Place your order.
Email us your order number.
Let us know you need the Mill Test Report.

We will send the certification documentation associated with your material.

If you need certification prior to purchase for approval purposes, contact us and we’ll assist.

Why Material Certification Matters

Mill Test Reports are commonly required for:

Commercial construction projects
Municipal and state contracts
Government work
Structural fabrication
Engineering documentation
Quality control programs

Providing certified material ensures transparency, compliance, and peace of mind.

Our Commitment

We source our steel from trusted U.S. mills and distributors to ensure consistent quality, strength, and performance.

At JWM Metal Supply, we don’t just sell steel — we supply traceable, certified material you can build with confidence.

If you have any questions about certification, compliance, or material grades, contact us directly.

We’re happy to help.