- 1.4903, DIN X10CrMoVNb9-1, AISI A213/P91 round bar
- 1.4903, DIN X10CrMoVNb9-1, AISI A213/P91 forging
- 1.4903, DIN X10CrMoVNb9-1, AISI A213/P91 sheet
- 1.4903, DIN X10CrMoVNb9-1, AISI A213/P91 flat bar
- 1.4903, DIN X10CrMoVNb9-1, AISI A213/P91 pipe
1.4903, DIN X10CrMoVNb9-1, AISI A213/P91
Production specification
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
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1.4903, DIN X10CrMoVNb9-1, AISI A213/P91
Designation by Standards
Brand Name | LH No. | Mat. No. | DIN | EN | AISI |
PT950 | 950 | Approx. 1.4903 | X10CrMoVNb9-1 | - | A213/P91 |
Chemical Composition (in weight %)
C | Si | Mn | Cr | Mo | Ni | V | W | Others |
0.10 | 0.35 | 0.45 | 8.50 | 0.95 | max. 0.40 | 0.22 | - | Nb=0.53, N=0.05, Al=max. 0.040 |
Description
PT950 is creep-resistant material that is generally used for temperatures up to 630oC.
Applications
Boiler tube sector and for superheated steam fittings.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 218, 207(200oC), 190(400oC), 162(650oC)
Density [g/cm3]: 7.7
Thermal conductivity [W/m.K]: 29.2
Specific heat capacity[J/g.K]: 0.46
Coefficient of Linear Thermal Expansion 10-6 oC-1
20-200oC | 20-400oC | 20-650oC |
11.3 | 12.0 | 12.7 |
Annealing
Heat to 730-780oC, cool slowly in furnace or air. Structure is martensite.
Hardening
Harden from a temperature of 1040-1090oC followed by air or oil quenching.
Mechanical properties at ambient temperature
Condition: Normalised and annealed, for size <"130 mm
0.2 % proof stress: 450 N/mm2
Tensile strength: 630-730 N/mm2
Elongation: 19% (Longit.), 17% (Transv.)
Notch impact energy (ISO-V): 40J (Longit.), 27J (Transv.)
0.2 % proof stress in N/mm2 vs. Temperature in oC
100oC | 150oC | 200oC | 250oC | 300oC | 350oC | 400oC | 450oC | 500oC | 550oC | 600oC |
410 | 395 | 380 | 370 | 360 | 350 | 340 | 320 | 300 | 270 | 215 |
Approximate values for creep rupture strength
Mean Creep Rupture Strength in N/mm2 vs. Temperature in oC
Hours | 500oC | 520oC | 540oC | 560oC | 580oC | 600oC | 620oC | 640oC | 660oC |
10 000 | 289 | 252 | 216 | 182 | 151 | 123 | 99 | 79 | 62 |
100 000 | 258 | 220 | 183 | 150 | 120 | 94 | 73 | 56 | 42 |
200 000 | 246 | 208 | 171 | 139 | 110 | 86 | 65 | 49 | 35 |
Forging
Hot forming temperature: 1100-800oC, cool slowly. Note: Quenching and tempering treatment must always be carried out after hot forming.
Machinability
Metal-cutting machinning is the sae as for speial engineering steel gardes of corresponding strength.
Welding
The material displays good weldability. Welding must be followed by stress relief annealing with slow cooling. Filler material is MTS 3 or Thermanit from Thyssen.
Mechanical properties
Heat treatment
Machining
Welding performance
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