1/4" A36 Steel Square Plate – Select Size

1/4" Steel Square Plates – Precision Cut & Ready for Your Next Project

Our 1/4" thick 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". Whether you're fabricating equipment, building trailers, reinforcing structures, or creating custom metal projects, these heavy-duty steel plates provide the strength and durability you need.

Each plate is accurately cut with clean, weld-ready edges, making them ideal for welding, machining, drilling, and general fabrication.

From DIY projects to industrial manufacturing, JWM Metal Supply delivers precision-cut steel plates with fast turnaround and free shipping.

Features

• Premium ASTM A36 Low Carbon Steel
• 1/4" (0.250") Thick
• Square Sizes from 4" × 4" to 30" × 30"
• Precision CNC Plasma Cut
• Clean, Weld-Ready Edges
• Raw Mill Finish
• Excellent Weldability
• Made in the USA
• Free Shipping
• Ships in 1–5 Business Days

Specifications

Material: ASTM A36 Low Carbon Steel

Thickness: 1/4" (0.250")

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

Manufacturing Process: CNC Plasma Cut

Tolerance: ±0.025"

Finish: Raw Mill Finish

Country of Origin: USA

Common Uses

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

Why Buy From JWM Metal Supply?

• Precision Cut in Kansas
• Premium American Steel
• No Minimum Order
• Fast Turnaround
• 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 tooling.

Are the plates painted?

No. They are supplied with a raw mill finish.

Can I order multiple quantities?

Yes! We offer bulk pricing for larger orders. Contact us for a custom quote.