Mainly from the following four aspects, weight, strength, corrosion resistance, surface treatment.
Weight. Due to its low density, the aluminum alloy mountaineering buckle is also relatively light in weight and convenient to carry. Stainless steel mountaineering buckles are heavier, but also more robust, due to elements such as nickel and chromium.
strength. Stainless steel mountaineering buckles have higher hardness and strength than aluminum alloys, and can handle high tensile strength. Although the strength of aluminum alloy mountain climbing buckles is lower than that of stainless steel, they can also meet the standards for climbing.
Corrosion resistance. Both aluminum alloy mountaineering buckles and stainless steel mountaineering buckles have excellent corrosion resistance and rust resistance, and can resist the effects of moisture, sweat, dust, and other factors.
Surface treatment. There are various surface treatment methods for aluminum alloy mountain climbing buckles, including electrophoresis, spraying, anodizing, etc., which can increase aesthetics and wear resistance. There are few surface treatments for stainless steel mountaineering buckles, usually with bright or colored treatment.
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