Inconel & Super Duplex Flanges
Need Inconel or super duplex flanges without waiting months to clear import customs? Texas Flange stocks and ships high-alloy flanges from the Greater Houston area, and has since 1986. If you have been chasing quotes from overseas mills with long lead times and tariff headaches, this is the domestic alternative.
High-Alloy Flange Grades We Carry
We supply these to ASME B16.5 (1/2" through 24") and ASME B16.47 Series A and B (26" and up), in raised face, RTJ, and flat face, and in weld neck, blind, slip-on, socket weld, lap joint, and threaded configurations. Flanges up to 12" NPS are held in approved domestic stock, with larger sizes USA-manufactured on a made-to-order basis as required.
Inconel 625
UNS N06625
ASTM B564 / ASME SB564
Nickel-chromium-molybdenum-niobium alloy. Excellent resistance to pitting, crevice corrosion, and a wide range of aggressive media across a broad temperature range.
Inconel 718
UNS N07718
ASTM B564 / ASME SB564
Age-hardenable nickel alloy with high strength for demanding high-pressure and elevated-temperature service.
Incoloy 825
UNS N08825
ASTM B564 / ASME SB564
Nickel-iron-chromium with molybdenum and copper. Strong performer in sulfuric and phosphoric acids and sour environments.
Super Duplex 2507
UNS S32750 (ASTM A182 F53)
ASTM A182 / ASME SA182
PREN above 40. High strength and outstanding resistance to chloride stress-corrosion cracking. A workhorse for offshore, seawater, and chemical service.
Super Duplex S32760 (Zeron 100)
UNS S32760 (ASTM A182 F55)
ASTM A182 / ASME SA182
Super duplex grade with excellent corrosion resistance and toughness, widely specified for seawater and topside process piping.
Duplex 2205
UNS S31803 / S32205 (F51 / F60)
ASTM A182 / ASME SA182
The standard-duty duplex grade. Roughly twice the strength of 316L with far better chloride SCC resistance.
Stock & Lead Times
Common sizes and classes generally ship from stock. Larger diameters and higher pressure classes are forged to order. Availability moves with size, class, and quantity, so the figures below are typical ranges. Request a quote for a confirmed lead time on your exact item.
| Grade | Sizes | Pressure Classes | Typical Availability |
|---|---|---|---|
| Inconel 625 (N06625) | 1/2" - 24" (12"+ to order) | 150# - 2500# | Common sizes from stock; larger / higher class forged to order |
| Inconel 718 (N07718) | 1/2" - 24" (all to order) | 150# - 2500# | Typically forged to order |
| Incoloy 825 (N08825) | 1/2" - 24" (12"+ to order) | 150# - 2500# | Common sizes from stock; balance forged to order |
| Super Duplex 2507 (S32750 / F53) | 1/2" - 24" (26"+ to order) | 150# - 2500# | Common sizes from stock; large diameter forged to order |
| Super Duplex S32760 (Zeron 100 / F55) | 1/2" - 24" (all to order) | 150# - 2500# | Typically forged to order |
| Duplex 2205 (S31803 / S32205) | 1/2" - 24" (26"+ to order) | 150# - 2500# | Broadly stocked; large diameter forged to order |
Freight terms: Ex Works Pearland unless quoted otherwise. Availability and lead time confirmed at time of quote.
Sizes, Classes & Standards
- Sizes: 1/2" through 24" (ASME B16.5); 26" and up (ASME B16.47 Series A & B).
- Pressure classes: 150#, 300#, 600#, 900#, 1500#, 2500#.
- Facings: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF).
- Types: Weld Neck, Blind, Slip-On, Socket Weld, Lap Joint, Threaded, Long Weld Neck, Orifice.
Certification & Traceability
- MTRs: Material Test Reports (EN 10204 3.1) with full chemistry and mechanicals.
- PMI: Positive Material Identification on request.
- NACE MR0175 / ISO 15156: compliant material for sour and H2S service.
- Heat traceability on every high-alloy order.
Why Source Domestically
When your alternative is a mill halfway around the world with a long lead time and an ocean of freight between you and your turnaround date, a US source that holds stock changes the math. We carry the alloy, we hold the paper, and we ship from Houston. No customs surprises, no runaround, and domestic-manufactured parts that ensure compliance with your end user's quality requirements.
Get a QuoteFrequently Asked Questions
Where can I buy Inconel and super duplex flanges in the US?
What are typical lead times on Inconel and super duplex flanges?
What super duplex grades do you carry?
Do you provide MTRs and NACE MR0175 material?
What sizes and pressure classes are available?
Get a Quote on Inconel & Super Duplex Flanges
Send us the grade, size, class, facing, and type, and we will come back with price and lead time, usually within the hour.
