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Related terms:
toughness
hardening
carbide
abrasive
hardened
chromium
Wikipedia sources: Hard water Diamond Mohs scale of mineral hardness Water Water purification Cast iron Carbon steel Pencil Turquoise Mineral Shotgun shell Metallurgy Beryllium Cubic zirconia Rivet Gemstone Aluminium oxide Alloy Erosion Ruby Solid Copper Blacksmith Jade Stainless steel Oak Emerald Molybdenum Level of measurement Garnet Context for words: hardness |
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