3/16" A36 Steel Square Plate – Select Size

3/16" A36 Steel Square Plates – Precision Cut for Fabrication, Welding & Repair

Our 3/16" thick A36 steel square plates are precision CNC plasma cut from premium ASTM A36 low carbon steel and are available in sizes from 4" × 4" to 30" × 30". Designed for professional fabricators, welders, manufacturers, and DIY builders, these plates are ideal for structural reinforcement, base plates, brackets, machinery repairs, trailer fabrication, and countless custom metalworking projects.

Every plate is cut in-house with clean, weld-ready edges for consistent quality and dependable performance. Whether you need a single plate or multiple pieces, JWM Metal Supply delivers precision-cut American steel with fast turnaround and free shipping.

Features

• Premium ASTM A36 Low Carbon Steel
• 3/16" (0.188") Thick
• Square Sizes from 4" × 4" to 30" × 30"
• Precision CNC Plasma Cut
• Clean, Weld-Ready Edges
• Raw Mill Finish
• Excellent Weldability
• Easy to Drill and Machine
• Made in the USA
• Always Fast & Free Shipping
• Ships in 1–5 Business Days

Specifications

Material: ASTM A36 Low Carbon Steel

Thickness: 3/16" (0.188")

Shape: Square

Available Sizes: 4" × 4" through 30" × 30"

Manufacturing Process: CNC Plasma Cut

Dimensional Tolerance: ±0.025"

Finish: Raw, Uncoated Steel

Country of Origin: USA

Common Uses

• Base Plates
• Mounting Plates
• Trailer Fabrication
• Welding Projects
• Structural Reinforcement
• Equipment Repair
• Agricultural Equipment
• Machine Components
• Industrial Fabrication
• DIY Metal Projects

Why Buy From JWM Metal Supply?

• Precision Cut in Kansas
• Premium American Steel
• No Minimum Order
• Fast Turnaround
• Always Fast & Free Shipping
• Ships in 1–5 Business Days
• Bulk Pricing Available
• Family-Owned Fabrication Shop

Frequently Asked Questions

Can these plates be welded?

Yes. ASTM A36 low carbon steel offers excellent weldability using MIG, TIG, or Stick welding.

Can I drill or machine these plates?

Absolutely. A36 steel machines and drills easily using standard metalworking tools.

Will my plate have mill scale?

Yes. Plates are supplied with a raw mill finish and may contain light mill scale, scratches, or surface discoloration typical of carbon steel.

Can I order larger quantities?

Yes! Contact us for bulk pricing and custom quotes.