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20 NiCrMo 14 5 | 1.6772 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Predecessor VDA 231-106 classification Application temperature [°C]
1.6772 (VdTÜV WB 337 : 2022-03) 20 NiCrMo 14 5 1.6772 VdTÜV WB 337 : 2022-03 Supersedes VdTÜV WB 337 : 2008-06 Valid Germany 20 NiCrMo 14 5 1.1.1 -40 - 400 1)
1) Remark: Quenched and tempered high-temperature steel bars for bolts and nuts in the temperature range -40 to 400°C for: - components in the primary circuit of nuclear power plants with light water reactors (LWR) according to KTA 3201.1 - components of the external systems according to RSK guidelines for pressurized water reactors (PWR) section 4.2 - containment vessels in accordance with RSK guidelines for pressurized water reactors (PWRs) Section 5 and KTA 3401 Annex A4 - other components for nuclear facilities - pressure vessels according to AD 2000 W7 and W10 - pressure equipment according to directive 2014/68/EU in compliance with section 4 annex I - steam boilers according to TRD 105 Applicable standard: EN 10269

Chemical Composition

Al [%] C [%] Cr [%] Mn [%] Mo [%] Ni [%] P [%] S [%] Si [%] Remainder
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Material Compliance

REACh RoHS
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Mechanical Properties

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Direction Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Elongation A [%] Reduction of Area [%]
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Physical Properties

Temperature [°C] Density [g/cm³] Young's Modulus [GPa] Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] Differential Coefficient of Thermal Expansion [10^-6*K^-1] Thermal Conductivity [W/(m*K)] Thermal Diffusivity [10^-6 m²/s] Specific Electrical Resistance [µΩm] Mean Specific Heat Capacity [kJ/(kg*K)] True Specific Heat Capacity [kJ/(kg*K)]
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Toughness Data (Impact)

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Shape Specimen Direction Notch Impact Energy [J]
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Welding and Joining

Welding and Joining - Evaluation
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Creep Rupture Behaviour

Condition Temperature [°C] Creep Tensile Strength at 10^4 h [MPa] Creep Tensile Strength at 10^5 h [MPa] 1% Creep Limit at 10^4 h [MPa] 1% Creep Limit at 10^5 h [MPa]
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Heat Treatment

Heat Treatment Step Temperature [°C] Medium
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Cross Reference

Material Name Country Standard
20NiCrMo14-5 Germany 1)
20 NiCrMo 14 5 Germany KTA 3211.1
20 NiCrMo 14 5 Germany KTA 3401.1
V120
1) Source: Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename Supplier
Firmodur 6772 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Siegen 1)
20 NiCrMo 14 5-I Saarstahl AG, Völklingen 1)
20 NiCrMo 14 5-II Saarstahl AG, Völklingen 1)
Böhler V 120-I voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg 1)
Böhler V 120-II voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg 1)
1) Source: VdTÜV WB 337 Supplement : 2022-03

Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Density

Temperature [°C] Density [g/cm³]
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Linear-elastic

Temperature [°C] Young's modulus [GPa] Bulk modulus [GPa] Shear modulus [GPa] Poisson's ratio
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Alternating stress

Temperature [°C] Stress ratio Mean stress [MPa] Alternating stress [MPa] Cycles
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Coefficient thermal expansion

Related Temperature [°C] Temperature [°C] Coefficient thermal expansion [10^-6*K^-1]
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Specific heat

Temperature [°C] Specific heat [kJ/(kg*K)]
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Thermal conductivity

Temperature [°C] Thermal conductivity [W/(m*K)]
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Electrical resistivity

Temperature [°C] Specific electrical resistance [µΩm]
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Designation

Designation Material number Source
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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