Content provided by Barry Hoeffner
Ladish is the largest stockist of stainless, duplex & exotic alloys. Our materials range from 300 series stainless to carbon steel, to Duplex, Inconels, Hastelloys, Monels and more. We are equipped and our shelves are stocked ready for your quick delivery orders. We are also equipped to handle any custom modifications.
Valve Materials
1. CAST materials of construction
Carbon Steel & Chromes:
- WCB/WCC (Carbon)
- LCB/LCC (Low Temp Carbon)
- WC6 ( 1-1/4 Cr.)
- WC9 (2-1/4 Cr.)
- C5 ( 5 Cr.)
- C12 ( 9Cr- 1Mo)
- C12A (9Cr-1Mo-V)
300 Series Stainless:
- CF8M/CF3M (316/316L)
- CF8/CF3 (304/304L)
- CG8M/CG3M (317/317L)
- CK20 (310)
- CF8C (347)
Alloy 20, Duplex & Super Duplex:
- CN7M (Alloy 20)
- CN3MCu (Low C Alloy 20)
- CN3MN (AL6XN)
- CK3MCuN (254-SMO)
- CD3MN (Duplex 2205)
- CE3MN (Super Duplex Gr. 5A)
- CD3MWCuN (Super Duplex Gr. 6A)
- CD4MCuN (Super Duplex Gr. 1B)
Inconels:
- CY40 (Inconel 600)
- CW6MC (Inconel 625)
- CT15C (Incoloy 800)
- CU5MCuC (Inconel 825)
Hastelloys:
- N12MV (Hastelloy B)
- N7M (Hastelloy B2)
- CW12MW (Hastelloy C276)
- CW6M (Hastelloy C Modified)
- CX2MW (Hastelloy C22)
Monel & Other Exotic Alloys:
- M35-1 (Monel 400)
- M30C (Weldable)
- C-2, C-3 and C-7 (Titanium)
- 702C (Zirconium)
- CZ100 (Nickel 200)
2. FORGED materials of construction. Currently stocking A105, LF2, F5, F9, F11, F22,F51, 316SS, A20 and Monel.
300 Series Stainless:
- A182 F304, F304L, F304H
- A182 F310
- A182 F316, F316L, F316H
- A182 F317, F317L
- A182 F321
- A182 F347, F347H
Nickel Alloy
- B564 N06600 Inconel 600
- B564 N06625 Inconel 625
- B564 N08825 Inconel 825
- B564 N04400 Monel 400
- B564 N10276 Hastelloy C
Alloy 20, Duplex & Super Duplex:
- A182 F20
- A182 F51, F53, F55, F61
- A182 F44
Carbon Steel & Chromes:
- A105 – Carbon
- A352- LF2
- A182- F5, F9, F11, F22, F91
The Valve Material Selection Process
The valve selection process is complex. A few material selection considerations should be pressure, temperature, type of fluid (liquid or natural gas, dirty or abrasive, corrosive), and operating conditions. Operation conditions could be comprised of NACE requirements, shut-off requirements, thermal shock, frequency of operation and fire safe requirements. Process compatibility and severe defining characteristics also drive material selection. Does the application require a material that resists corrosion or erosion? What strength does the material need to be? Is it suitable for design temperature and Thermal Flux? Regarding severe defining characteristics, are there options?
All of our valves meet the following design codes and standards.
- API
- Company Standards
- ANSI/ASME
- Power Boilers – Section I
- Pressure Vessels – Section VIII (1 & 2)
- Piping Code – B31.3
- Flange Ratings – B16.5
- Valves – B16.34
NACE Compliance
- MR0175 – Upstream Standard: Materials for use in H2S-containing environments in oil & gas production
- MR0103 – Downstream Standard: Materials resistant to sulfide stress corrosion cracking in corrosive petroleum refining environments
An important fact that should not be overlooked is the fact that it is the end user’s / specifier’s responsibility to ensure that a material will be satisfactory in the intended environment. When specified, it is the manufacturer’s responsibility for meeting the metallurgical requirements of the standard. It is widely misunderstood as too often the interpretation of the user is that is NACE material is specified, that metal is suitable for all H2S-containing and potential SCC environments. IT is critical to understand the design process conditions and maximum partial pressure of H2S.
For more information on NACE requirements, please contact us!
Once again, Ladish will continue To Mark Progress.
