Is the SAE 3000 Welding Counter Flange, Carbon Steel, Type D3 suitable for use at temperatures from -20°C to +100°C?

Yes. The SAE 3000 Welding Counter Flange, Carbon Steel, Type D3 is specified as suitable for operating temperatures from -20°C to +100°C. Its carbon steel construction with galvanization provides corrosion resistance and reliable performance across that temperature range, making it appropriate for hydraulic systems, machinery, and related industrial applications.

Can the SAE 3000 Welding Counter Flange, Carbon Steel, Type D3 be welded to stainless steel or dissimilar materials without compromising joint integrity?

SAE 3000 Welding Counter Flange, Carbon Steel, Type D3 can be welded to stainless steel or other dissimilar materials, but doing so requires caution to avoid compromising joint integrity. Carbon steel welded directly to stainless steel can lead to galvanic corrosion, brittle intermetallic phases, and thermal expansion mismatch. To preserve strength and leak resistance: - Use a qualified welding procedure (e.g., TIG or MIG) and a filler metal appropriate for the combination (commonly a nickel‑based or austenitic stainless filler when joining carbon steel to stainless) to reduce formation of brittle phases and minimize corrosion risk. - Implement proper joint design and fit-up to control dilution and heat input; preheat and post‑weld heat treatment may be needed depending on thickness and service conditions. - Consider using a transition piece or bimetallic insert (explosion‑bonded or transition fittings) when service conditions are aggressive or cyclic, to isolate incompatible metals. - Apply appropriate corrosion protection (e.g., passivation of stainless side, coatings, or cathodic protection) and inspect welds (visual, dye penetrant, or NDT as required) to ensure leak‑tightness. Given the SAE 3000 flange is galvanized, remove galvanization from the weld area before welding and reapply suitable corrosion protection afterward. For critical or high‑temperature applications, consult a welding engineer or material specialist to develop a certified procedure.

Counter-flange SAE 3000 for welding-in, steel carbon, type D3

All products, High-pressure adapters/

Additional information

Material	CS – steel (cast iron)

Counter-flange SAE 3000 with socket for welding-in for connections with a flange connection, without bolts mounting and seal. Material: steel carbon, galvanized. Operating temperature: od -20°C up to +100°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HK-D3-SAX-06	Counter-flange SAE 3000 3/8", for welding 17.5 mm	-	348	In stock	Enquiry
HK-D3-SAX-08	Counter-flange SAE 3000 1/2", for welding 21.6 mm	-	348	In stock	Enquiry
HK-D3-SAX-12	Counter-flange SAE 3000 3/4", for welding 27.2 mm	-	348	In stock	Enquiry
HK-D3-SAX-16	Counter-flange SAE 3000 1", for welding 34.1 mm	-	348	In stock	Enquiry
HK-D3-SAX-20	Counter-flange SAE 3000 1.1/4", for welding 42.8 mm	-	278	In stock	Enquiry
HK-D3-SAX-24	Counter-flange SAE 3000 1.1/2", for welding 48.6 mm	-	210	In stock	Enquiry
HK-D3-SAX-32	Counter-flange SAE 3000 2", for welding 61 mm	-	210	In stock	Enquiry
HK-D3-SAX-40	Counter-flange SAE 3000 2.1/2", for welding 76.6 mm	-	175	In stock	Enquiry
HK-D3-SAX-48	Counter-flange SAE 3000 3", for welding 90.5 mm	-	138	In stock	Enquiry
HK-D3-SAX-56	Counter-flange SAE 3000 3.1/2", for welding 103 mm	-	35	In stock	Enquiry
HK-D3-SAX-64	Counter-flange SAE 3000 4", for welding 115.3 mm	-	35	In stock	Enquiry
HK-D3-SAX-80	Counter-flange SAE 3000 5", for welding 142 mm	-	35	In stock	Enquiry

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Counter-flange SAE 3000 with socket for welding-in for connections with a flange connection, without bolts mounting and seal. Material: steel carbon, galvanized. Operating temperature: od -20°C up to +100°C.