- sales@hindustansteel.com
- 390/392, Ground Floor, Shankar Mansion, Vanita Vishram Chowk, S.V.P. Road, Mumbai - 400004
Phone
+91-9820944724
+91-9820944724
Home > Our Products > Armor & Protection Steel Plates > Support / Technical Page > Welding & Machining of Armor Plates
Working with armor steel plates like HIND ARMOR 500, HSC 500T, or MIL-DTL-46100 equivalents?
One of the biggest challenges for fabricators and OEMs is:
“How do we properly weld, cut, and machine high hardness armor plates without compromising ballistic performance?”
At Hindustan Steel Corporation, we not only supply armor plates but also guide clients on best practices for welding and machining to avoid cracking, soft spots, or structural weakness.
Armor steel plates undergo quenching and tempering, giving them:
This metallurgy makes them highly resistant to bullets but also sensitive to heat inputs and fabrication errors.
Our team offers guidelines and support to help avoid these issues during on-site fabrication.
| Property | Range |
|---|---|
| Hardness | 470–540 BHN (HHA Grades) |
| Tensile Strength | 1400–1800 MPa |
| Elongation | 8–12% |
| Impact Toughness | Controlled per heat batch |
These properties dictate the choice of cutting, drilling, and welding methods.
Preheat Temperature (For >10 mm thickness):
120°C to 160°C, depending on plate thickness.
Interpass Temperature:
Maximum 200°C
Recommended Welding Process:
GMAW (MIG/MAG) or SMAW (Stick Welding) with low hydrogen electrodes.
Post-Weld Treatment:
Allow slow cooling, cover with thermal blankets if needed.
Welding Tip:
Minimize heat input to prevent HAZ softening.
Short, controlled weld runs preferred.
| Process | Recommendation |
|---|---|
| Cutting | Waterjet, Plasma, or Laser Cutting (with controlled heat) |
| Drilling | Carbide-tipped tools at low RPM with high feed rate |
| CNC Profiling | Available at Hindustan Steel Corporation |
For thickness above 20 mm, waterjet or low-speed plasma is preferred to maintain edge hardness.
We help reduce fabrication risk for vehicle armorers, defense contractors, and security project fabricators.
We export cut, drilled, and ready-to-install armor plates to:
Packaging Includes:
GMAW or SMAW with low hydrogen electrodes.
Yes, especially for thickness over 10 mm.
Waterjet, plasma, or laser with controlled heat input.
Yes, using carbide tools and low RPM.
Loss of hardness in the weld zone due to excessive heat.
Not usually, but depends on project specs.
6 mm to 50 mm.
Only for thin gauges up to 8 mm.
Yes, on request.
Call, email, or WhatsApp with drawings and specifications.
Request Fabrication Support + Cut-to-Size Quote
Need help with welding and machining armor plates?
Contact Hindustan Steel Corporation today.
Ask for:
+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com
390/392, Ground Floor, Shankar Mansion, S.V.P. Road, Mumbai – 400004, India
From urban combat zones to riot-prone civilian areas, armor & protection steel plates play a critical role in safeguarding lives, assets, and infrastructure.
Armor steel isn’t one-size-fits-all. Based on mission type, threat level, region-specific compliance, and user profile (military, VIP, civilian), different armor plate grades are engineered for maximum protection, performance, and cost-efficiency.
Armor steel isn’t one-size-fits-all. Based on mission type, threat level, region-specific compliance, and user profile (military, VIP, civilian), different armor plate grades are engineered for maximum protection, performance, and cost-efficiency.
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+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com