Structural steel
General structural steel. Used for the painted carbon steel body of Emsal wafer check valves, for brackets and for non-pressure-bearing parts.
- Rp0.2 · MPa
- ≥ 235
- Rm · MPa
- 360–510
- TEMPERATURE
- −10 … +300 °C
- COST
Chemical composition
Mechanical properties
| STANDARD · CONDITION | Rp0.2 MPa | Rp1.0 MPa | Rm MPa | A % | KV J |
|---|---|---|---|---|---|
| EN 10025-2 · t ≤ 16 mm | 235 | — | 360–510 | 26 | 27 (+20 °C) |
| EN 10025-2 · 40 < t ≤ 63 mm | 215 | — | 360–510 | 25 | 27 (+20 °C) |
Longitudinal specimen. ReH decreases with thickness: 16–40 mm 225 · 40–100 mm 215 · 100–150 mm 195. Rm for 3–100 mm. KV ≥ 27 J (+20 °C).
Service temperature
A structural steel; it does not appear in the normative pressure-temperature tables of EN 1092-1. The impact test is at +20 °C. For high pressure and temperature, choose a pressure vessel steel such as P265GH.
This is the limit of the material itself. A valve's service temperature is usually set by the seal and seat materials; product pages give it for each seal option.
Media suitability GENERAL TREND
Emsal assessment. The final choice is made from corrosion tables, taking concentration, temperature, chloride content and flow velocity into account.
Strengths and weaknesses
Strengths
- The most economical steel
- Easy to weld and machine
- Available in every size
Weaknesses
- Corrosion protection (paint, coating) is essential
- Not a pressure equipment steel
Manufacturing and use
- ECONOMY
- Very low.
- MANUFACTURING METHODS
- Cutting from plate and machining · Welded construction
- TYPICAL VALVE PARTS
- Wafer check valve body (painted) · Bracket · Supporting parts
Surface protection
- Cataphoretic coatingCathodic electrocoating (KTL, e-coat)Wafer check valve DN 25–150
- Zinc platingElectrolytic zinc platingWafer check valve DN 200–400
- Anti-corrosion primerAnti-corrosion primerWafer check valve DN 450 and above
- Wet paintIndustrial wet paint systemOther Emsal products
Used in 31 Emsal products
- 001Wafer check valveBody
- 002Disc check valveBody · Bonnet · Stem · Disc
- 005Short pattern swing check valveBody
- 030Flanged Y-strainerBody · Cover · Plug · Eyebolt
- 033Flanged T-strainerBody · Cover · Plug · Eyebolt
- 050Flanged sight flow indicatorBody
- 052In-line sight flow indicatorBody
- 053Tank sight flow indicatorBody
- 072Flanged 3-way ball valveLever
- 073Flanged 4-way ball valveLever
- 079Threaded 3-piece ball valveLever
- 081Monoblock ball valveLever
- 082Wafer ball valve with heating jacketBody
- 310Metal bellows axial expansion jointFlange · Liner
- 311Rubber expansion jointFlange
- 313Externally pressurized expansion jointFlange · Inner pipe · Outer pipe
- 314V-flex expansion jointBraid · Elbows and fittings · Flange · Elbow · Drain plug
- 370Threaded needle valveBody · Handwheel
- 390Slip-on flangeBody
- 391Threaded flangeBody
- 392Weld neck flangeBody
- 393Blind flangeBody
- 394Threaded couplingBody
- 395NippleBody
- 396UnionBody
- 397Threaded plugBody
- 398Butt-weld elbowBody
- 400Butt-weld teeBody
- 401Butt-weld reducerBody
- 402Butt-weld capBody
- 903Mounting bracketBody
Source: EN 10025-2. Values compiled and verified by Emsal Vana; for binding values, refer to the current edition of the standard and the material certificate.