25-35NB Datasheet - Rev 17
3
Petrochemical Products Group Pevely, Missouri Waukesha, Wisconsin Phone 636-479-4499 Phone 262-544-7705 Fax 636-479-3399 Fax 262-544-7884 25-35Nb is a niobium strengthened modification of 25-35 (HP) with enhanced stress rupture properties and weldability. Superior rupture strength is achieved through utilization of state-of-the-art foundry practices. The Petrochemical Products Group manufactures several 25-35Nb variations with chemistries and properties designed for specific customer applications. 25-35Nb Issue: 17 Date: 7 Feb 02 DA T A SHEET 25-35Nb Description Chemical Composition Range Mechanical Properties Element (%) C Mn Si Cr Ni Nb Mo Fe Minimum 0.35 — — 23.0 32.0 0.60 — Bal Maximum 0.55 1.50 2.00 27.0 37.0 1.00 0.50 Bal *Calculations based on 95% confidence limit. TENSILE PROPERTIES Minimum Temperature °F C 70 21 70 21 1600 870 2000 1093 Tensile Strength ksi MPa 65.0 448 79.0 545 25.0 172 9.0 62 Yield Strength ksi MPa 33.0 227 38.0 262 18.0 124 8.0 55 Elongation % 8 (Centrifugal) 6 (Static Cast) 16 26 40 Typical Minimum Stress to Produce Rupture °F °C 1600 870 1700 927 1800 980 1900 1040 10,000 hours ksi MPa 6.25 43.1 4.36 30.1 2.73 18.8 1.53 10.5 100,000 hours ksi MPa 4.80 33.1 3.02 20.9 1.69 11.7 0.84 5.8 STRESS-RUPTURE PROPERTIES*
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Transcript of 25-35NB Datasheet - Rev 17
8/12/2019 25-35NB Datasheet - Rev 17
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Petrochemical Products Group Pevely, Missouri Waukesha, WisconsinPhone 636-479-4499 Phone 262-544-7705Fax 636-479-3399 Fax 262-544-7884
25-35Nb is a niobium strengthened modification of 25-35 (HP) with enhanced stressrupture properties and weldability. Superior rupture strength is achieved throughutilization of state-of-the-art foundry practices. The Petrochemical Products Groupmanufactures several 25-35Nb variations with chemistries and properties designed forspecific customer applications.
25-35NbIssue: 17Date: 7 Feb 0
DATA SHEET
25-35Nb
Description
Chemical Composition Range
Mechanical Properties
Element (%) C Mn Si Cr Ni Nb Mo Fe
Minimum 0.35 — — 23.0 32.0 0.60 — Bal
Maximum 0.55 1.50 2.00 27.0 37.0 1.00 0.50 Bal
*Calculations based on 95% confidence limit.
TENSILE PROPERTIES
Minimum
Temperature °F
°C
7021
7021
1600870
20001093
Tensile Strength ksiMPa
65.0448
79.0545
25.0172
9.062
Yield Strength ksiMPa
33.0227
38.0262
18.0124
8.055
Elongation % 8 (Centrifugal)6 (Static Cast)
16 26 40
Typical
Minimum Stress toProduce Rupture
°F°C
1600870
1700927
1800980
19001040
10,000 hours ksiMPa
6.2543.1
4.3630.1
2.7318.8
1.5310.5
100,000 hours ksiMPa
4.8033.1
3.0220.9
1.6911.7
0.845.8
STRESS-RUPTURE PROPERTIES*
8/12/2019 25-35NB Datasheet - Rev 17
http://slidepdf.com/reader/full/25-35nb-datasheet-rev-17 2/2
1
10
100
1
10
100
30 31 32 33 34 35 36 37 38 39 40
30 31 32 33 34 35 36 37 38 39 40
S t r e s s ( M P a )
LMP = T (23.0 + log t) / 1000
1 k s i = 6 . 8
9 5 M P a
LMP = Larson-Miller parameter
T = TemperatureoK (
oC +273.15)
t = Hours to rupture
Average
Minimum
(95% Confidence)
Petrochemical Products Group
Physical Properties
8600 Commercial BoulevardPevely, Missouri 63070-1528Phone 636-479-4499 Fax 636-479-3399
CARONDELET CORPORATION
905 East St. Paul AvenueWaukesha, Wisconsin 53188-3898Phone 262-544-77005 Fax 262-544-7884
Wisconsin entrifugal
©2001 MetalTek International
25-35NbIssue: 17Date: 7 Feb 02
Density: 0.285 lb/in3 (7.90 g/cm
3 )
Melting Point: 2450°F (1343°C)
Temperature Conductivity
212°F (100°C) 80 BTU-in/ft2/hr/°F (11.5 W/m°C)
1600°F (870°C) 170 BTU-in/ft2/hr/°F (24.6 W/m°C)
2000°F (1093°C) 200 BTU-in/ft2/hr/°F (28.9 W/m°C)
Thermal Conductivity:
Temperature Coefficient
70-1600°F (21-870°C) 10.0x10-6
in/in/°F (18.0x10-6
m/m/°C)
1600-1800°F (870-980°C) 10.3x10
-6
in/in/°F (18.5x10
-6
m/m/°C)1800-2000°F (980-1093°C) 10.6x10-6 in/in/°F (19.1x10-6 m/m/°C)
Thermal Expansion:
Larson-Miller Creep-Rupture Curve
