DRA | Paralloy Group | Paralloy Group

26/55 Cr/Ni 2.8% Al

Aluminium Corrosion Resistant
Ammonia Cracking

Application

Alumina Forming Alloy With Metal Dusting Resistance

Manaurite® DRA is a nickel-based alloy developed for very high temperature processes, becoming, so far, the most creep resistant Manaurite® at temperatures exceeding 1100°C. With its more 50% of nickel content the Manaurite® DRA grade develop a high creep resistance which allow a use at much higher temperature for a much longer time. In addition of its heat-resistance, the Manaurite® DRA grade so as the Manaurite® XAl4 grade, develops an auto-protective oxide layer with high-temperature stability thanks to is aluminium content.

Manaurite® DRA is the latest grade developed by Manoir France’s R&D team. Accumulated knowledge and experience have strongly contributed to improve creep resistance properties coupled with oxidation and carburization resistance properties of Manaurite® DRA.

Nominal Composition

6
C Carbon

0.4
24
Cr Chromium

26
13
Al Aluminium

2.8
28
Ni Nickel

55
Plus
Additions

Physical Properties

Coefficient of Thermal Expansion (mm/mm°C)	Thermal Conductivity (W/m°K)	Density (g/cm³)	Young Modulus (GPa)	Specific Heat (J/g.K)
-	20°C - 10.2	20°C - 7.70	20°C - 173	20°C - 0.46
20 - 800°C - 17.3	800°C - 22.2	800°C - 7.51	800°C - 133	800°C - 0.62
20 - 1000°C - 18.5	1000°C - 25.9	1000°C - 7.45	1000°C - 119	1000°C - 0.67

Mechanical Properties

Download specifications

UTS (N/mm²) 600
Proof Stress 0.2% (N/mm²) 400
Elongation (%) 5
Temperature UTS (N/mm²) Proof Stress 0.2% (N/mm²) Elongation (%)
650°C 329 236 39
700°C 298 219 42
750°C 272 202 44
800°C 246 185 47
850°C 220 168 49

Temp (°C)	10,000 Hour Life		50,000 Hour Life		100,000 Hour Life
	Minimum	Mean	Minimum	Mean	Minimum	Mean
800	31.8	34.7	31.1	33.9	30.6	33.4
850	30.3	33.1	28.4	31.0	27.4	29.9
900	27.1	29.6	24.3	26.6	23.0	25.1
950	22.9	25.0	19.5	21.3	18.1	19.7
1000	18.1	19.8	14.7	16.0	13.3	14.5
1050	13.5	14.7	10.3	11.3	9.1	10.0

Download specifications

UTS (N/mm²)	600
Proof Stress 0.2% (N/mm²)	400
Elongation (%)	5

Temperature	UTS (N/mm²)	Proof Stress 0.2% (N/mm²)	Elongation (%)
650°C	329	236	39
700°C	298	219	42
750°C	272	202	44
800°C	246	185	47
850°C	220	168	49

Temp (°C)	10,000 Hour Life		50,000 Hour Life		100,000 Hour Life
	Minimum	Mean	Minimum	Mean	Minimum	Mean
800	31.8	34.7	31.1	33.9	30.6	33.4
850	30.3	33.1	28.4	31.0	27.4	29.9
900	27.1	29.6	24.3	26.6	23.0	25.1
950	22.9	25.0	19.5	21.3	18.1	19.7
1000	18.1	19.8	14.7	16.0	13.3	14.5
1050	13.5	14.7	10.3	11.3	9.1	10.0