Alloy 28 / Sanicro 28 vs Alloy 800H / Incoloy 800H: 36% composition overlap. Significantly different materials serving different application areas.
Alloy 28 / Sanicro 28 vs Alloy 800H / Incoloy 800H
Side-by-side chemical composition and mechanical property comparison.
Overview
Alloy 28 / Sanicro 28
1.4563
Super-austenitic stainless steel (Fe-31Ni-27Cr-3.5Mo-1Cu) with ultra-low carbon. Exceptional resistance to sulfuric acid, phosphoric acid, and chloride stress corrosion cracking. Solution-annealed: Rm 500–750 MPa, Rp0.2 ≥220 MPa, A ≥35%. Density 8.0 g/cm³, PREN ~39–47. UNS N08028, ASTM B709/B668. Applications: phosphoric acid evaporators, sulfuric acid piping, oil/gas sour service (NACE MR0175), seawater heat exchangers, nuclear fuel reprocessing. Alleima trade name Sanicro 28.
Alloy 800H / Incoloy 800H
1.4958
Iron-nickel-chromium alloy (Fe-32Ni-21Cr) with controlled carbon (0.05–0.10%) and grain size for optimized creep-rupture strength above 600°C. Solution-annealed: Rm ≥450 MPa, Rp0.2 ≥170 MPa, A ≥30%. Density 7.94 g/cm³, E-Modul 196 GPa. Excellent resistance to carburization, oxidation, and nitriding to 1100°C. UNS N08810, ASTM B407/B408/B409. Applications: ethylene cracking tubes, reformer furnace tubes, heat exchangers, nuclear steam generators, chemical reactors. Variant 800HT (N08811/1.4959) has tighter Al+Ti control for even higher creep strength.
| Alloy 28 / Sanicro 28 | Alloy 800H / Incoloy 800H | |
|---|---|---|
| Material Number | 1.4563 | 1.4958 |
| Category | Nickel Alloys | Nickel Alloys |
| Standard | EN 10088 / ASTM B709 | EN 10302 / ASTM B407 |
Chemical composition (wt%)
| Element | Alloy 28 / Sanicro 28 | Alloy 800H / Incoloy 800H | Overlap |
|---|---|---|---|
| C | ≤ 0.02% | 0.05–0.1% | No overlap |
| Si | ≤ 1% | ≤ 1% | OK |
| Mn | ≤ 2.5% | ≤ 1.5% | OK |
| Cr | 26–28% | 19–23% | No overlap |
Mechanical properties
| Property | Alloy 28 / Sanicro 28 | Alloy 800H / Incoloy 800H | Unit |
|---|---|---|---|
| tensile_strength | 500–750 | ≥ 450 | MPa |
| yield_strength | ≥ 220 | ≥ 170 | MPa |
| elongation | ≥ 35 | ≥ 30 | % |
Compatibility Assessment
Alloy 28 / Sanicro 28 and Alloy 800H / Incoloy 800H have significantly different compositions (36% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Alloy 28 / Sanicro 28 the same as Alloy 800H / Incoloy 800H?
Alloy 28 / Sanicro 28 and Alloy 800H / Incoloy 800H have a 36% composition overlap. They are generally not directly interchangeable.
Can I replace Alloy 28 / Sanicro 28 with Alloy 800H / Incoloy 800H?
Generally not recommended. The compositions differ significantly (36% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between Alloy 28 / Sanicro 28 and Alloy 800H / Incoloy 800H?
The main differences are in the following elements: C, Cr, Cu, Fe. Alloy 28 / Sanicro 28 is a Nickel Alloys grade, while Alloy 800H / Incoloy 800H is a Nickel Alloys grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.