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B16.5 ASTM A105 A105N Carbon Steel Flange Class 150 #Class 300 ANSI 150 RF 6" So Flange SO WN Flange Oil and Gas
ASTM A105 is the most generally utilized carbon steel material grade that used to manufacture forge piping components, for example, flange and forged fittings of small diameter piping. This carbon steel material grade is utilized for ambient and higher-temperature administration in pressure frameworks.
Carbon steel A105 flanges covers seamless forged carbon steel
piping components for use in pressure systems at high-temperature
service and ambient.Heat treatment is not a compulsory for asmesa
105 flange material except for above Class 300, flanges of special
design where the design pressure or design temperature are not
known and for items over 4” NPS and above Class 300.
A105 blind flange is forged between 1700°F to 2200°F, followed by
quenching and tempering.
| A105 Carbon Steel Flange Types | Size | |
| ASTM A105 Carbon Steel Slip-On Flanges | ASTM A105 Carbon Steel Weld Neck Flanges | Sizes 1/2″ – 48″ Raised Face or Flat Face |
| ASTM A105 Carbon Steel Threaded Flanges | ASTM A105 Carbon Steel Socket Weld Flanges | |
| ASTM A105 Carbon Steel Plate Flanges | ASTM A105 Carbon Steel Reducing Flanges | |
| ASTM A105 Carbon Steel Lap Joint Flanges | ASTM A105 Carbon Steel Blind Flanges | |
| ASTM A105 Carbon Steel Square Flanges | ASTM A105 Carbon Steel Ring Type Joint Flanges | |
| ASTM A105 Carbon Steel Forged Flanges | ASTM A105 Carbon Steel Orifice Flanges | |
| Element | Composition %, Note C |
|---|---|
| Carbon | .35 max |
| Manganese | .60-1.05 |
| Phosphorus | .035 max |
| Sulfur | .040 max |
| Silicon | .10-35 |
| Copper | .40 max, note A |
| Nickel | .40 max, note A |
| Chromium | .30 max, note A,B |
| Molybdenum | .12 max, note A,B |
| Vanadium | .08 max, note A |
| Note A – The sum of copper, nickel, chromium, molybdenum and
vanadium shall not exceed 1.00% Note B – The sum of chromium and molybdenum shall not exceed .32% Note C – for each reduction of 0.01% below the specified carbon maximum (.35%), an increase of .06% manganese above the specified maximum (1.05%) will be permitted up to a maximum of 1.65% | |
| Tensile | 70 ksi, min |
| Yield, note A | 36 ksi, min |
| Elongation in 2in, Basic minimum for wall 5/16″ and over, strip test | 30% |
| Hardness | 187 HBW max |
| Note A – Determined by either the 0.2% offset method or the 0.5% extension-under-load method. Other test methods available as listed in A105. | |
