Zeron Fastners
ASTM A194 Grade 7 Slip-On Flanges
ASTM A194 Grade 7 Slip-On Flanges are popular forging components known for their ease of installation and lower initial cost compared to Weld Neck Flanges. These flanges are designed to slip over the pipe and are then fillet welded both inside and outside to provide sufficient strength and prevent leakage. They are produced from the chromium-molybdenum alloy steel associated with A194 Gr. 7 material, giving them enhanced durability and performance in high-temperature services. While generally limited to lower pressure applications than Weld Neck types, these forged flanges are widely used across industrial piping systems where the integrity of the A194 Grade 7 and B7 bolting material is required. Zeron Fasteners offers a range of high-quality Slip-On Flanges compliant with dimensional standards.
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ASTM A194 Grade 7 Slip-On Flanges Chemical Composition
| Element | Composition (% Maximum/Range) |
|---|---|
| Carbon (C) | 0.38 to 0.48 |
| Manganese (Mn) | 0.75 to 1.00 |
| Phosphorus (P) | 0.035 maximum |
| Sulfur (S) | 0.040 maximum |
| Silicon (Si) | 0.15 to 0.35 |
| Chromium (Cr) | 0.80 to 1.10 |
| Molybdenum (Mo) | 0.15 to 0.25 |
ASTM A194 Grade 7 Slip-On Flanges Mechanical Properties
| Property | Requirement (Based on A194 Gr. 7) |
|---|---|
| Tensile Strength, minimum | 170000 psi (1172 MPa) |
| Yield Strength, minimum | 150000 psi (1034 MPa) |
| Hardness (Brinell) | 248 to 352 HBW |
| Elongation, minimum | Approx. 12% |
| Heat Treatment | Quenched and Tempered |