Valve Engineering & Metallurgy Consultation Hub

Free interactive metallurgy engine, dynamic weldability & corrosion calculation models, side-by-side alloy comparison tools, and instant PDF valve datasheet generators.

Engineering Resource Notice: This interactive application uses empirical metallurgical models, ASME B16.34 P-T formulas, IIW Carbon Equivalent parameters, and chloride PREN formulas to provide instant recommendations. For critical applications, please consult with our B2B Valve Design Office directly using the RFQ module at the bottom.

1. Input Process Conditions

Highly corrosive sour service selected. Requires strict sulfide stress cracking compliance.
Operating Temperature 150 °C
-196°C (Cryo) 0°C 250°C 650°C (Steam)
Operating Pressure 50 Barg
0 Barg Class 150 (20) Class 600 (100) Class 2500 (420)

Live Valve Material & Temperature Indicator

Active Metallurgy Recommendation: ASTM A351 CF8M (SS316)

2. Metallurgy & Design Results

Body Casting Match: ASTM A351 CF8M
Body Forging Match: ASTM A182 F316
Weldability Index (CE): N/A
Corrosion Resistance (PREN): 23.1 (Moderate)
Recommended Sealing Systems: Seat: PTFE / Devlon Gasket: Spiral SS316+Graphite Packing: Flexible Graphite
Recommended Valve Selection Rationale:

Due to corrosive sulfide content and low/medium pressure, a Trunnion Ball Valve in SS316 with fire-safe API 607 graphite seals provides optimal isolation.

Side-by-Side Valve Alloy Comparator

Select any two valve alloys to compare chemical compositions, corrosion thresholds, mechanical limits, and B2B pricing indices side-by-side.

Metallurgical Property Alloy 1 (ASTM A216 WCB) Alloy 2 (ASTM A351 CF8M)
Carbon (C) Content 0.30% Max 0.08% Max
Chromium (Cr) Content 0.50% Max 18.00 - 21.00%
Nickel (Ni) Content 0.50% Max 9.00 - 12.00%
Molybdenum (Mo) Content 0.20% Max 2.00 - 3.00%
Other Key Elements Si, Mn, Cu Si, Mn
Tensile Strength Min. 485 MPa 485 MPa
Yield Strength Min. 250 MPa 205 MPa
Weldability Class Excellent (Preheat only if CE > 0.43) Excellent (No preheat needed)
Acid Corrosion Resistance Poor (Rusts quickly) Good (Highly passive)
B2B Relative Pricing Index 1.0x (Baseline) 2.5x (Medium Cost)

3. Valve Engineering Specification Sheet

Fill out corporate process parameters to generate a print-ready ASME / ISA datasheet layout below.

SUPREME VALVES INDIA - ENGINEERING DIVISION

PROCESS VALVE TECHNICAL DATA SHEET & SPECIFICATION

GENERAL ADMINISTRATIVE INFORMATION

PROJECT REFERENCE: Supreme Engineering Client
VALVE TAG NO.: XV-101A
VALVE STYLE: Isolation (Tight Shut-off)
NOMINAL SIZE: NPS 1/2" to 2"
END CONNECTIONS: Flanged Raised Face (RF)

PROCESS & DESIGN LIMITS

PROCESS MEDIUM: Sour Crude Oil (H2S / Sour Gas)
DESIGN TEMP LIMIT: 150 °C
DESIGN PRESS LIMIT: 50 Barg
PRESSURE RATING CLASS: Class 300 / 600
DESIGN FLOW RATE: 350 GPM

METALLURGICAL & MATERIAL COMPOSITION DETAILS

RECOMMENDED CAST BODY: ASTM A351 CF8M
RECOMMENDED FORGED BODY: ASTM A182 F316
CARBON EQUIVALENT (CE): N/A
PITTING INDEX (PREN): 23.1
SEAT SEALS MATERIAL: PTFE / Devlon
GASKET SEAL SPEC: Spiral SS316+Graphite
STEM PACKING SPEC: Flexible Graphite
SOUR SERVICE (NACE): COMPLIANT (Hardness <22 HRC)

API 598 MANDATORY PRESSURE TESTING REQUIREMENTS

HYDROSTATIC SHELL 1125 PSI (77.6 Bar)
HYDROSTATIC SEAT 825 PSI (56.9 Bar)
PNEUMATIC SEAT AIR 80 PSI (5.5 Bar)

Consult Supreme Design Engineers

Need custom ASME engineering drawings, severe-service validation, cavitation-control trim designs, or commercial volume pricing? Submit your technical specs directly to our chief metallurgists. Looking specifically for sulfuric acid service? View our dedicated Alloy 20 Valves Page for detailed specifications.

  • Design responses in 24 Hours
  • Full ASME B16.34 and API 6D validation
  • Dynamic torque and sizing calculations