ore | Industrial grade | Boundary grade | |||||||||
Non-ferrous metal | |||||||||||
copper | Cu | 0.4%-0.5% | 0.20% | ||||||||
Lead Zinc | Pb | Sulfide ore | 0.7%-1.0% | 0.3%-0.5% | |||||||
Mixed mine | 1.0%-1.5% | 0.5-0.7% | |||||||||
Oxidized ore | 1.5%-2.0% | 0.5-1.0% | |||||||||
Zn | Sulfide ore | 1.0%-2.0% | 0.5%-1.0% | ||||||||
Mixed mine | 2.0%-3.0% | 0.8%-1.5% | |||||||||
Oxidized ore | 3.0%-6.0% | 1.5%-2.0% | |||||||||
Bauxite (Al 2 O 3) | Lucai | ≥55% | ≥40% | ||||||||
Pit mining | ≥55% | ≥40% | |||||||||
Tungsten | Black tungsten | 0.12%-0.18% | 0.08%-0.1% | ||||||||
White tungsten | 0.15%-0.2% | 0.1%-0.12% | |||||||||
Sand tungsten | 0.04% | 0.02% | |||||||||
molybdenum | 0.06%-0.08% | 0.03%-0.05% | |||||||||
nickel | 0.3%-0.5% | 0.2%-0.3% | |||||||||
tin | 0.2%-0.4% | 0.1%-0.2% | |||||||||
magnesium | Dolomite mine | ≥19% | |||||||||
Magnesite | ≥42%~46% | ||||||||||
antimony | 1.50% | 0.70% | |||||||||
HG | 0.08%-0.10% | 0.04% | |||||||||
cobalt | Sulfide, cobalt (cobalt and arsenic) | 0.03%-0.06% | 0.02% | ||||||||
Cobalt ore | 0.50% | 0.30% | |||||||||
bismuth | 0.50% | 0.20% | |||||||||
black metal | |||||||||||
iron | Open hearth Rich mine | Magnetic, red, imaginary hematite | 55 | 50 | |||||||
Brown, goethite | 50 | 45 | |||||||||
blast furnace Rich mine | magnetite | 50 | 45 | ||||||||
Red, imaginary hematite | 45~50 | 40～45 | |||||||||
Brown, goethite | 40～45 | 35～40 | |||||||||
Siderite | 35～40 | 30~35 | |||||||||
Self-fluxing ore | 35~38 | 28~32 | |||||||||
magnetite | 25% | 20% | |||||||||
Hematite | 28%-30% | 20% | |||||||||
Siderite | 25% | 20% | |||||||||
Limonite | 30% | 20% | |||||||||
titanium | Primary mine | Rutile | ≥3~4% | ≥2% | |||||||
Titanite | ≥8~10% | ≥5~6% | |||||||||
placer | Rutile | ≥2kg/m 3 | ≥1kg/m 3 | ||||||||
Titanite | ≥15kg/m 3 | ≥10kg/m 3 | |||||||||
vanadium | Separate deposit | V 2 O 5 | 0.5 to 0.70% | ||||||||
Vanadium is an associated component deposit | ≥0.1%-0.5% | ||||||||||
manganese | Manganese oxide | Rich mine | ≥30 | ≥20～25 | |||||||
Lean mine | ≥20 | ≥10～15 | |||||||||
Manganese carbonate | Rich mine | ≥25 | ≥15～20 | ||||||||
Lean mine | ≥10～15 | ≥8 | |||||||||
Iron manganese ore | ≥10～15 | ||||||||||
chromium | Primary mine | Rich mine | ≥32% | ≥25% | |||||||
Lean mine | ≥8%-10% | ≥5-8% | |||||||||
placer | ≥3% | ≥1.5% | |||||||||
Precious metal | |||||||||||
gold | Rock gold | 3-5g/t | 1-2g/t | ||||||||
silver | 100-120g/t | 40-50g/t | |||||||||
Rare earth | |||||||||||
Light rare earth ( 铈æ—) | 镧 , 铈, 镨 , é’• , é’œ, é’ , é“• | Fluorine-bearing carbon ore, monazite primary ore | 1% | 0.5% | |||||||
Monazite sand mine and weathering crust | 300～500g/m 3 | 100～200g/m 3 | |||||||||
Heavy rare earth ( é’‡æ—) | é’‡, é’† , 铽 , é• , é’¬ , é“’ , é“¥ , 镱 , é•¥ | Containing yttrium (xenotime, gadolinite) pegmatite carbonate rock | 0.05 to 0.1% | ||||||||
Phosphonium ore deposit and weathering crust deposit | 50～70g/m 3 | 30g/m 3 | |||||||||
strontium | Sr (lapisin mineral) | 60% | 40% | ||||||||
Rare metal | |||||||||||
钽 | Ta | open air | 20～30g/ m3 | 10 g/m 3 | |||||||
underground | 50～60 g/ m3 | 20 to 25 g/m 3 | |||||||||
Annealed steel bar is produced by annealing which is one kind of heat treatment to get proper hardness for machining. Our advantages and more services of annealed steel bar includes:
1) Wide range of diameters from 10mm to 300mm
2) Customized Length from 100mm to 12000mm
3) Good surface roughness: 0.4um to 1.5um
4) Good straightness: 0.5mm/m to 2mm/m
5) Good roundness: 80% of diameter tolerance
6) Diameter tolerance: -0.02mm to -0.06mm/h9, h10, h11
7) Matched further processing: Grinding, polishing, straightening
8) Anti-rusty package
9) Full sets of testing equipment: Surface, Dimenstion. Mechanical properties testing
10) Fast delivery time
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SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdbrightsteelbar.com