Quality is Our Foundation, Not a Final Check
Every blade is built with integrity from raw steel to final inspection.
Steel Sourcing
Premium 65Mn/50Mn steel coils sourced and tested.
It All Starts with Superior Raw Materials
We start with the right steel, ensuring every blade is built for toughness, flexibility, and long-term performance.
Why We Choose 65Mn Spring Steel
Correct. 65Mn is a Chinese steel grade, designated according to GB/T 1222-2007, part of China’s national standard system. It is a high-carbon manganese spring steel, widely used in China for tools and mechanical parts requiring high strength, hardness, and wear resistance. 65Mn delivers superior hardness and toughness after heat treatment, ensuring blades stay sharp and strong under repeated heavy-duty use.
📌 65Mn Steel Overview:
| Property | 65Mn (China GB Standard) | Equivalent (approx.) |
|---|---|---|
| Carbon (C) | 0.62–0.70% | SAE 1070 (~0.67–0.75%) |
| Manganese (Mn) | 0.90–1.20% | SAE 1070 (~0.50–0.80%) |
| Silicon (Si) | 0.17–0.37% | Similar |
| Hardness After Heat Treatment | HRC 55+ achievable | Comparable to SAE 1070 |
| Common Use | Springs, cutting tools, machetes | Springs, blades |
✅ Key Points for Buyers:
- 65Mn is not imported steel—it is a domestic Chinese specification but closely matches SAE 1070 in carbon content.
- Its high Mn content improves toughness after heat treatment, making it a preferred choice for durable machetes and agricultural blades.
- Compared to 50Mn (roughly SAE 1055), 65Mn provides better hardness and wear resistance, but may require better rust protection in humid areas.
In-Process Hardness & Toughness Testing
Each batch undergoes strict hardness and flexibility testing after heat treatment to ensure blade performance and safety.
Steel Coil Procurement & Elemental Composition Verification
Chemical Composition Control: Purity from the Source.
We use a high-precision spectrometer to analyze all incoming steel. By verifying its composition against national standards, we guarantee material purity and consistency from the very start.
Physical & Dimensional Control: Precision is Prerequisite.
Micrometers enforce a strict ±0.05mm tolerance, while visual checks ensure a flawless surface. Only materials that pass both meticulous inspections are greenlit for production.
Post-Punching Dimensional & Structural Integrity Inspection
Dimensional Accuracy Control
We use calipers and specialized gauges to meticulously inspect each stamped blade. Every outline, rivet hole, and logo is verified against the mold design, guaranteeing absolute consistency and ensuring a perfect fit during final assembly.
Initial Hardness Assurance
A critical hardness test is then performed, ensuring the material is within the optimal HRC 18–25 range. This vital step prevents brittleness from the stamping process, safeguarding the superior toughness and durability of the final product.
Post Heat-Treatment Testing (Critical Stage)
Precision Hardness – The Foundation of Durability
Rockwell tested at multiple points to ensure optimal, uniform hardness (e.g., HRC 54-58), we guarantee long-lasting wear resistance for top performance.
Balanced Strength – Verifying Superior Toughness
Each piece must pass a rigorous 180° bend test with zero cracks, proving its exceptional fracture resistance and ensuring reliability under extreme stress.
Perfect Straightness – Guaranteeing Optimal Performance
A final inspection guarantees zero warping post-treatment. This ensures a precision fit and smooth, efficient operation for your equipment.
Our 4D Inspection System
Ensuring quality at every stage with rigorous, multi-angle inspections—from visual checks to advanced mechanical testing.
Visual Inspection
Checks blade flatness, edge sharpness, and rivet/handle finishes.
Functional & Structural Tests
Rigorous shake, impact, and cutting tests simulate real-world use.
Instrumental Testing
Checks blade flatness, edge sharpness, and rivet/handle finishes.
Dimensional Tolerance Control
Caliper and tape measurements down to 0.01mm precision
Transparent Manufacturing, Trusted Quality
We map every production stage—from steel coils to final packing—so you can trace your order’s quality and progress at a glance.
Partner with Gear Machete: Quality You Can Count On
Your supply chain needs a partner, not just a product. Let’s build success together with consistent quality and service.