Germany · DIN

X 2 CrNi 19 11

DIN 17455:1985 — Welded circular stainless steel tubes with general quality requirements - Technical delivery conditions

Chemical composition

wt% · log scale
0.010.1110100C0.03Cr18 – 20Mn2Ni10 – 12.5P0.045S0.03Si1
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥180 MPaTensile strength Rm460–680 MPaElongation A≥35 %Yield strength Rp0.2≥180 MPaTensile strength Rm460–680 MPaElongation A≥40 %

High / low temperature

value vs. temperature
70.295.612114617250100150200250300350400450500550°C
  • welded steel tubes solution annealed and quenched · Yield strength Rp0.2

Physical properties

vs. temperature
Elastic modulus GPa
165 – 200°C
Mean thermal expansion 10⁻⁶/K
16.0 – 18.0°C

Fatigue S-N curve

stress vs. cycles (log)
96.6139182224266110Cycles
  • 1.Plates; 20 mm thick; Welded; Total strain control; R=-1; T: 600°C; Cylindrical; Diameter [mm]: 14; Gauge length [mm]: 20
  • 2.Plates; 20 mm thick; Welded; Total strain control; R=-1; T: 23°C; Cylindrical; Diameter [mm]: 14; Gauge length [mm]: 20
  • 3.Plates; 20 mm thick; Welded; Total strain control; R=-1; T: 23°C; Cylindrical; Diameter [mm]: 14; Gauge length [mm]: 20
  • 4.Plates; 20 mm thick; Welded; Total strain control; R=-1; T: 600°C; Cylindrical; Diameter [mm]: 14; Gauge length [mm]: 20; Specimen location: in welding direction; 方向: L
  • 5.Plates; 20 mm thick; Welded; Total strain control; R=-1; T: 600°C; Cylindrical; Diameter [mm]: 14; Gauge length [mm]: 20; Specimen location: in welding direction; 方向: L
  • 6.Plates; 20 mm thick; Welded; Total strain control; R=-1; T: 600°C; Cylindrical; Diameter [mm]: 14; Gauge length [mm]: 20

Chemical composition

ElementminmaxSimilarRemarks
C0.03
Cr1820
Mn2
Ni1012.5
P0.045
S0.03
Si1

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
welded steel tube, solution annealed quenched, t <= 50 mm≥180460–680≥35；≥40

Physical properties

20.0

Elastic modulusMean thermal expansionThermal conductivitySpecific heatResistivityDensityPoisson's ratio
200.0015.00500.000.737.90

Typical physical values

DensityElastic modulusPoisson's ratioRemarks
7.61–8.10190.00–215.000.27–0.30不锈钢的典型材料性能数值，此值不来源于标准，它是指示性指标，不能被用于设计用途。
7.86190.00–210.000.27–0.30低碳，高合金钢材料性能属性数值，此值不来源于标准，它是指示性指标，不能被用于设计用途。

High/low temperature

Yield strength Rp0.2 (MPa)
ConditionTemperature ℃Approx.
welded steel tubes solution annealed and quenched55080
welded steel tubes solution annealed and quenched50081
welded steel tubes solution annealed and quenched45085
welded steel tubes solution annealed and quenched40089
welded steel tubes solution annealed and quenched35094
welded steel tubes solution annealed and quenched300100
welded steel tubes solution annealed and quenched250108
welded steel tubes solution annealed and quenched200118
welded steel tubes solution annealed and quenched150132
welded steel tubes solution annealed and quenched100147
welded steel tubes solution annealed and quenched50162

Fatigue

1.Plates; 20 mm thick; Welded; Total strain control; R=-1; T: 600°C; Cylindrical; Diameter [mm]: 14; Gauge length [mm]: 20

Test conditions
ItemDetail
ProductPlates; 20 mm thick; Welded
ExperimentTotal strain control; R=-1; T: 600°C
SpecimenCylindrical; Diameter [mm]: 14; Gauge length [mm]: 20
Monotonic
PropertyValue
Elastic modulus (GPa)157.0
Strain life
No.Cyclic yield strength (MPa)Cyclic strain-hardening exponent n′Cyclic strength coefficient K′ (MPa)Fatigue strength coefficient σ′f (MPa)Fatigue strength exponent bFatigue ductility coefficient ε′fFatigue ductility exponent c
12340.1020440382-0.07100.3170-0.7434
Stress life
No.SpecimenStress (MPa)Cycles
1Cylindrical; Diameter [mm]: 14; Gauge length [mm]: 201372E6

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