The DIN 1.7380 (10CrMo9-10) LR 90° Elbow is a high-alloy "Chrome-Moly" fitting designed for extreme temperature and high-pressure steam service. Containing 2.25% Chromium and 1% Molybdenum, it offers exceptional creep resistance and protection against hydrogen attack. The Long Radius (LR) design ensures a smooth $1.5D$ flow transition, reducing turbulence. These butt-welded elbows are essential components in modern power plant boilers and petrochemical refinery reactors.
Technical Attributes: DIN 1.7380 (10CrMo9-10) LR Elbow
Material Grade,10CrMo9-10 (High Alloy Steel)
Material Number,1.7380 (DIN 17175 / EN 10216-2)
Fitting Type,90 Degree Long Radius (LR) Elbow
Design Standard,EN 10253-2 / DIN 2605
Radius Type,Bauart 3 (R≈1.5×D)
End Connection,Butt Welding (BW)
End Preparation,Beveled Ends per EN 10253 / DIN 2559
Size Range,DN15 to DN1200
Wall Thickness,"Matches matching pipe series (e.g., SCH 80, 160)"
Chromium (Cr),2.00%–2.50%
Molybdenum (Mo),0.90%–1.10%
Tensile Strength,480–630 MPa
Yield Strength,≥280 MPa
Heat Treatment,Isothermal Annealing or Quenched & Tempered
Max Service Temp,Up to +600∘C (Stable creep strength)
Impact Energy,≥31J (at 20∘C)
Testing Standard,"100% NDT (RT/UT for welds), Hydrostatic"
Certification,EN 10204 3.1 / 3.2
Traceability,Heat Number & Material Stamped
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