Bulletproof Steel Plate

30CrMnSiA Bulletproof Steel Plate

30CrMnSiA military grade bulletproof steel plate for armor panels, protective doors and security vehicles.

30CrMnSiA is the Chinese military-spec alloy behind armor panels and high-strength structural parts: quenched and tempered, tensile strength in the 1100 MPa class, and proven against ballistic threats in service. Sourcing it properly means heat treatment records and ballistic evidence, not just a hardness number.

Grades and Standards

  • GB/T 3077 30CrMnSiA, quenched and tempered delivery
  • Supplied with heat treatment parameter records on the MTC

Sizes and Supply

  • Thickness 4-80 mm, widths 1000-2000 mm
  • Waterjet cutting recommended to avoid heat-affected edges on finished armor

Quality Documents

EN 10204 3.1 MTC with Q&T parameters, hardness mapping and ultrasonic testing. Ballistic test reports against specified threats can be arranged per production lot - coordination happens before production, not after.

Where This Plate Goes

  • Vehicle and facility armor panels
  • Protective doors and safes
  • High-strength wear-resistant structural parts

Questions Buyers Ask

Q: What thickness stops what? A: Protection level, strike angle and armor geometry decide together. Send the threat specification and we will propose a thickness with test evidence rather than a guess.
Q: Can you machine it? A: Best done before final heat treatment or with carbide tooling after - plan the process with us early.
Armor inquiries are handled with the paperwork they deserve - specification first, price second.