Our products – tailor-made for your specific requirements
Solutions for Steam CrackersRadiant coils operated at high temperatures (i.e. up to 1150°C) in steam cracker furnaces are exposed to severe atmospheres. Therefore, S+C helps operators to select the proper alloy, by determining ways to control furnace operation to minimise carburisation, creep damage, coking, distortion, etc.
It´s well proven in the industry that cast materials – either centrifugally, vertically or statically cast – meet those requirements perfectly and deliver the required properties. S+C offers exactly this with its full range of products and alloys for steam cracker components.
Beside this, it is S+C´s first and foremost aim to constantly develop further in order to be state of the art when it comes to new technologies and alloys to meet the ever-increasing demands of sustainability.
S+C is specialized in the manufacture and supply of all types of centri-cast tubing and statically cast fittings (such as elbows, return bends, tetrafittings, wye-pieces etc.) for all available designs and in all typical alloys.
S+C is specialized in the manufacture and supply of all types of centri-cast tubing and statically cast fittings (such as elbows, return bends, tetrafittings, wye-pieces etc.) for all available designs and in all typical alloys.
Optimized coil configuration
Innovative materials that generate added valueA detailed understanding of the many factors involved in the steam cracking environment, coupled with sound appreciation in plant performance, is needed to select the optimum material for a particular part within the radiant coil.
As a high quality alloy manufacturer of cast materials and inner profile technologies, we are very confident in their proven benefits. Hence let us help you to fit those cutting edge products into your particular radiant coil design in order to generate the most advantageous configuration.
Centralloy® G 4852
ASTM: HP-Nb
DIN EN 10295
GX40NiCrSiNb35-25
Apllication: Radiant Coil
Centralloy® G 4852 Micro
ASTM: HP-Nb Mod
DIN EN 10295 (mod)
GX40NiCrSiNbTi35-25
Apllication: Radiant Coil
Centralloy® G 4868
ASTM:
Not assigned
GX50CrNi30-30
Apllication: Radiant Coil
Centralloy® ET 45 Micro
ASTM:
Not assigned / PMA available
GX45NiCrSiNb45-35
Apllication: Radiant Coil
Centralloy® HT E
ASTM:
Not assigned / PMA available
Special proprietary alloy
Apllication: Radiant Coil
Centralloy® G 4859
ASTM: CT-15C
DIN EN 10295 / Vd TÜV W.Bl. 471
GX10NiCrNb32-20
Apllication: Transfer Line
Centralloy® H 101
ASTM: HP low C
DIN EN 10295 (mod)
GX13NiCrNb37-25
Apllication: Transfer Line
Centralloy® HT E
The power of innovationDeveloped by Schmidt + Clemens, the special alloy Centralloy® HT E is the ideal material for your steam cracker.
With Centralloy® HT E, Schmidt + Clemens sets new standards in materials technology for steam crackers. Our groundbreaking, self-regenerating aluminum-forming alloy offers numerous advantages, such as: reduced coke formation, increased resistance to carburization and oxidation, and improved creep rupture strength. Maximum performance through flexible operation.
Our high-performance alloy enables more efficient and sustainable production.
SCOPE®
The unique profiling of your tubes will lead to an even higher benefit for your operationToday, centrifugally cast tubes are the preferred choice in the majority of radiant coils in service. Spun cast tubes in the high alloy material grades provide appropriate levels of high temperature strength and corrosion resistance. However, some small bore wrought extruded pipes, some with internal fins, used in high selectivity furnaces.
The effect of increasing the internal surface area of radiant tubes, in order to improve heat transfer efficiency, is well known. Internally finned centrifugally cast SCOPE® tubes in comparison to bare tubes reflect a number of benefits.
SCOPE® Fusion HT E
Intelligent profile meets superior materialThe use of an intelligent profile in steam cracker tubes can considerably raise the selectivity of a plant. Use of the right alloy as tube material can greatly inhibit coking and carburization processes.
But what happens when innovative tube design meets a perfect material? SCOPE® Fusion HT E is earning top marks for performance and endurance and has distinguished itself as by far the best of today‘s steam cracker tube systems.
The use of Centralloy® HT E – which has a proven track record as the most effective alloy to inhibit coking and carburization – extends required decoking intervals by multiple times, thereby minimizing downtime while also protecting the plant. The innovative 3D design, which can be adapted to meet customer-specific requirements, increases selectivity and ethylene yield while saving energy at the same time.
SCOPE® Fusion HT E helps you get the most out of your steam cracker!
By merging our two superior technologies, into SCOPE® Fusion HT E, results in a distinct advantage regarding energy efficiency and ability to last.
Whereby, within the framework of the EU funded IMPROOF project the qualities of SCOPE® Fusion HT E were subjected to extensive testing. S+C, as a technology supplier, was part of a large consortium incorporating universities, engineering companies and operators. A full furnace at an end user’s steam cracker was equipped with SCOPE® Fusion HT E Coils.
Compared to standard materials, S+C’s technologies significantly reduced the greenhouse gas effects, while at the same time raising the efficiency of the cracker.

Point of contact
S+C Petrochemical Industry
Contact Department
Phone: +49 2266 92-929
Email: salespetro(at)schmidt-clemens.com
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