ASTM A105N Slip-On Raised Face Flange | ASME B16.5
Carbon Steel A105N SORF Flange
ASTM A105N slip-on raised face flanges (SORF) are forged carbon steel flanges designed for easy pipe alignment and cost-effective installation in pressure piping systems.
Manufactured to ASME B16.5, these flanges slip over the pipe and are welded on both the inside and outside, providing adequate strength for low to medium pressure applications.
Supplied in the normalized condition (A105N), these slip-on flanges offer improved mechanical consistency and reliability for pressure service.
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Slip-On Raised Face (SORF) Design
Slip-on flanges are designed to slide over the pipe and are fillet welded on both sides.
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Easy alignment during installation
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Lower cost compared with weld neck flanges
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Suitable for moderate pressure and temperature
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Raised face (RF) sealing surface compatible with spiral wound and soft gaskets
ASTM A105N SORF flanges are commonly selected where installation efficiency and economy are priorities.
This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions
Dimensions & Standards
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Material Standard: ASTM A105 / ASME SA105
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Heat Treatment: Normalized (A105N)
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Flange Standard: ASME B16.5
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Facing: SORF (Raised Face)
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Pressure Classes:
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Class 150
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Class 300
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Class 600
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Class 900
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Class 1500
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Class 2500
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Size Range: 1/2″ – 24″
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Manufacturing Process: Forged
ASTM A105 Specification
CHEMICAL COMPOSITION % (ASTM A105)
| STEEL DESIGNATION | CHEMICAL COMPOSITION | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SYMBOLIC | C max |
Si | Mn | P max |
S max |
Cu max |
Ni max |
Cr max |
Mo max |
V max |
Nb max |
Cu + Ni + Cr + Mo max |
Cr + Mo max |
| ASTM A105 | 0,35 | 0,10 ÷ 0,35 | 0,60 ÷ 1,05 | 0,035 | 0,040 | 0,40 | 0,40 | 0,30 | 0,12 | 0,08 | 0,02 | 1,00 | 0,32 |
| STEEL QUALITY | TENSILE TESTING | ||||
|---|---|---|---|---|---|
| UNIFIED TENSILE STRENGTH R |
DEVIATION FROM PROPORTIONALITY Rp 0,2 min |
ELONGATION A min |
C min |
HB max |
|
| N/mm2 | N/mm2 | % | % | ||
| ASTM A105 | 485 | 250 | 22 | 30 | 187 |
ASTM A105N Slip-On Raised Face Flange | ASME B16.5
ASTM A105N Slip on Flange
ASTM A105N slip-on raised face flanges manufactured to ASME B16.5 provide a cost-effective and reliable solution for pressure piping systems.
With normalized material condition, easy installation, and broad pressure class coverage, A105N SORF flanges are widely used in industrial and energy projects worldwide.
