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46% Content Chromite Sand for Casting Surface Sand AFS 40-45
Chromite sand with 46% chromium content and AFS 40-45 differs from metallurgical-grade chromite sand. Its particle size distribution and fineness are determined based on the requirements of casting processes such as lost foam casting, investment casting, resin-coated sand casting, and self-hardening sand casting. Both the American Foundry Society (AFS) and Chinese industry standards have established specifications for the fineness of chromite sand.
The Chromite Sand AFS 40-45 with 46% chromium content is different from metallurgical grade chromium iron ore sand. It is determined based on the requirements of casting processes such as lost foam casting, investment casting, coated sand casting, and self hardening sand casting to determine its particle size distribution and fineness. The American Foundry Society (AFS) and Chinese industry standards both specify the fineness of chromite sand.
Performance Characteristics of 46% Content Chromite Sand for Casting Surface Sand AFS 40-45
1. High melting point, high sintering temperature
2. Excellent thermal stability
3. High density, large specific gravity
4. Medium Mohs hardness 5.5
5. Strong thermal conductivity
6. Low coefficient of thermal expansion
1. High melting point, high sintering temperature
2. Excellent thermal stability
3. High density, high density -
4. Medium Mohs hardness 5.5
5. Strong thermal conductivity
6. Low coefficient of thermal expansion
46% Content Chromite Sand for Casting Surface Sand AFS 40-45Technical parameters:
1. Chemical composition
Cr2O3 (Chromium(III) oxide) | ≥ 46% |
SiO2 (silicon dioxide) | ≤ 1.0% |
FeO (iron oxide) | ≤ 26.5% |
Cr:Fe (chromium-iron ratio) | ≥1.5：1 |
MgO (magnesium oxide) | ≤ 10% |
CaO (calcium oxide) | ≤ 0.3% |
Al2O3 (aluminum oxide) | ≤ 15.5% |
P (Phosphorus) | ≤30 ppm |
S (sulfur) | ≤30 ppm |
Cr/Fe (chromium-iron ratio) | ≥ 1.55：1 |
2. Physical Properties:
Mohs Hardness | 5.5-6 |
Melting Point | 2180 ℃ |
Sintering Point | ＞1800℃ |
Specific Gravity | 4.0-4.8 g/cm3 |
Bulk Density (LPD) | 2.5-3 g/cm3 |
Color | Black |
PH Value | 7-9 |
Thermal conductivity | 0.63 W/M·K |
Thermal Expansion Rate (1000℃) | 0.6% |
Acid Demand Value (ADV) | ≤ 5ML |
Turbidity (JTU) | ≤ 110 |
Soil content | ≤ 0.1% |
Moisture | ≤ 0.1% |
46% content Chromite sand, used as foundry facing sand, AFS 40-45, has the following application scope:
1. Foundry Industry: Facing sand and molding sand for various casting processes.
2. Metallurgical refractory industry: raw materials for chromium-based tapping sand.
3. Colorant Industry: Green/Brown/Tea-colored Pigments for Ceramic and Glass Products.
4. Abrasion-resistant industry: wear-resistant fillers for brake products.
46% Content Chromite Sand for Casting Surface Sand AFS 40-45The Chinese character "的" is a possessive particle or modifier, often equivalent to "'s" or "of" in English. It can also be used to form adjectives or indicate attributes. In isolation, it does not have a direct English translation without context.The particle size distribution is as follows:
+30mesh(600um) | 4.8% |
+40mesh(425um) | 21.6% |
+50mesh(300um) | 45% |
+70mesh(212um) | 26.2% |
+100mesh(150um) | 2.3% |
AFSFineness value | 40.19 |
Other models of chromite sand:
AFS fineness | Mesh count | Particle size |
AFS25-30 | 20-40# | 0.45-0.85mm |
AFS30-35 | 20-50# | 0.3-0.85mm |
AFS30-40 | 20-60# | 0.25-0.85mm |
AFS35-40 | 30-70# | 0.2-0.6mm |
AFS40-45 | 40-70# | 0.2-0.4mm |
AFS45-50/AFS45-55 | 50-100# | 0.15-0.3mm |
AFS60-65 | 70-140# | 0.1-0.2mm |
/ | 200#-0 | 0-75um |
/ | 325#-0 | 0-45um |
