Thread Content
Category, grade or group coloring code: High-quality carbon structural steel – 05–15: white; 20–25: brown + green; 30–40: white + blue; 45–85: white + brown. 15Mn–40Mn: white with two stripes. 45Mn–70Mn: green with three stripes. Alloy structural steel: Manganese steel – yellow + blue; Silicon-manganese steel – red + black; Manganese-vanadium steel – blue + green. Chromium steel – green + yellow; Chromium-silicon steel – blue + red; Chromium-manganese steel – blue + black; Chromium-manganese-silicon steel – red + purple; Chromium-vanadium steel – green + black; Chromium-manganese-titanium steel – yellow + black; Chromium-tungsten-vanadium steel – brown + black. Molybdenum steel – purple; Chromium-molybdenum steel – green + purple; Chromium-manganese-molybdenum steel – green + white; Chromium-molybdenum-vanadium steel – purple + brown; Chromium-silicon-molybdenum-vanadium steel – purple + brown; Chromium-aluminum steel – aluminum color; Chromium-molybdenum-aluminum steel – yellow + purple; Chromium-tungsten-vanadium-aluminum steel – yellow + red. Boron steel – purple + blue; Chromium-molybdenum-tungsten-vanadium steel – purple + black. High-speed tool steel: W12Cr4V4Mo – brown with one stripe + yellow with one stripe; W18Cr4V – brown with one stripe + blue with one stripe; W9Cr4V2 – brown with two stripes; W9Cr4V – brown with one stripe. Chromium bearing steel: GCr6 – green with one stripe + white with one stripe; GCr9 – white with one stripe + yellow with one stripe; GCr9SiMn – green with two stripes; GCrl5 – blue with one stripe; GCrl5SiMn – green with one stripe + blue with one stripe. Stainless acid-resistant steel: Chromium steel – aluminum color + black; Chromium-titanium steel – aluminum color + yellow; Chromium-manganese steel – aluminum color + green; Chromium-molybdenum steel – aluminum color + white; Chromium-nickel steel – aluminum color + red; Chromium-manganese-nickel steel – aluminum color + brown; Chromium-nickel-titanium steel – aluminum color + blue; Chromium-nickel-niobium steel – aluminum color + blue; Chromium-molybdenum-titanium steel – aluminum color + white + yellow; Chromium-molybdenum-vanadium steel – aluminum color + red + yellow; Chromium-nickel-molybdenum-titanium steel – aluminum color + purple; Chromium-molybdenum-vanadium-cobalt steel – aluminum color + purple; Chromium-nickel-copper-titanium steel – aluminum color + blue + white; Chromium-nickel-molybdenum-copper-titanium steel – aluminum color + yellow + green; Chromium-nickel-molybdenum-copper-niobium steel – aluminum color + yellow + green. (Aluminum color corresponds to wide stripes, while other colors correspond to narrow stripes.) Heat-resistant steel: Chromium-silicon steel – red + white; Chromium-molybdenum steel – red + green; Chromium-silicon-molybdenum steel – red + blue; Chromium steel – aluminum color + black; Chromium-molybdenum-vanadium steel – aluminum color + purple; Chromium-nickel-titanium steel – aluminum color + blue; Chromium-aluminum-silicon steel – red + black; Chromium-silicon-titanium steel – red + yellow; Chromium-silicon-molybdenum-titanium steel – red + purple; Chromium-silicon-molybdenum-vanadium steel – red + purple; Chromium-aluminum steel – red + aluminum color; Chromium-nickel-tungsten-molybdenum-titanium steel – red + brown; Chromium-nickel-tungsten-molybdenum steel – red + brown; Chromium-nickel-tungsten-molybdenum-aluminum steel – aluminum color + white + red. (The first color corresponds to wide stripes, and the latter to narrow stripes.)