European Union · EN

X 4 CrNiMo 16 5 1

EN 4628:2007 — EN 4628

Chemical composition

wt% · log scale
0.0010.010.1110100C0.06Cr15 – 17Mn1.5Mo0.8 – 1.5N0.02Ni4 – 6P0.03S0.005Si0.7
  • min – max range
  • typical value

Mechanical properties

value range by condition
HardnessHBbars, annealed, <= 150 mmYield strength Rp0.2≥900 MPaYield strength Rp0.2≥900 MPaTensile strength Rm1100–1300 MPaTensile strength Rm1100–1300 MPaImpact energy Kv/Ku≥50 JImpact energy Kv/Ku≥100 JElongation A≥14 %Elongation A≥14 %HardnessHBbars, annealed, <= 75 mmYield strength Rp0.2≥900 MPaYield strength Rp0.2≥900 MPaTensile strength Rm1100–1300 MPaTensile strength Rm1100–1300 MPaImpact energy Kv/Ku≥20 JImpact energy Kv/Ku≥50 JElongation A≥8 %Elongation A≥8 %HardnessHBbars, annealed, >= 75 <= 150 mm, -

Physical properties

vs. temperature
Elastic modulus GPa
170 – 200°C
Mean thermal expansion 10⁻⁶/K
10.3 – 11.6°C

Chemical composition

ElementminmaxSimilarRemarks
C0.06
Cr1517
Mn1.5
Mo0.81.5
N0.02
Ni46
P0.03
S0.005
Si0.7

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
bars, annealed, <= 150 mmHB ≤293
bars, annealed, <= 75 mm≥9001100–1300≥14≥50 Charpy V Notch(-40°C)；≥100 Charpy V Notch(20°C)HB 341–401
bars, annealed, >= 75 <= 150 mm, -≥9001100–1300≥8≥20 Charpy V Notch(-40°C)；≥50 Charpy V Notch(20°C)HB 341–401

Physical properties

20.0

Elastic modulusMean thermal expansionThermal conductivitySpecific heatResistivityDensityPoisson's ratio
200.0015.00430.000.807.70

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

Impact energy Kv/Ku (J)
ConditionTemperature ℃minRemarks
bars annealed >= 75 <= 150 mm --4020Charpy V Notch
bars annealed <= 75 mm ( longitudinal )-4050Charpy V Notch

Similar grades

GradeRegionSystem
4418-431-77-EInternational standardISO
FE-WM 3504European UnionEN
FE-PM 3504European UnionEN
1.4418ItalyUNI
X 4 CrNiMo 16 5 1ItalyUNI
1.4418SpainUNE
X 4 CrNiMo 16 5 1SpainUNE
1.4418RomaniaSTAS
X 4 CrNiMo 16 5 1RomaniaSTAS
1.4418SwedenSS
X 4 CrNiMo 16 5 1SwedenSS
1.4418SwitzerlandSNV
X 4 CrNiMo 16 5 1SwitzerlandSNV
1.4418FinlandSFS
X 4 CrNiMo 16 5 1FinlandSFS
1.4418PolandPN
X 4 CrNiMo 16 5 1PolandPN
1.4418AustriaONORM
X 4 CrNiMo 16 5 1AustriaONORM
1.4418NorwayNS
X 4 CrNiMo 16 5 1NorwayNS
1.4418BelgiumNBN
X 4 CrNiMo 16 5 1BelgiumNBN
1.4418HungaryMSZ
X 4 CrNiMo 16 5 1HungaryMSZ
1.4418Czech RepublicCSN
X 4 CrNiMo 16 5 1Czech RepublicCSN
1.4418BulgariaBDS
X 4 CrNiMo 16 5 1BulgariaBDS
1.4418United KingdomB.S.
X 4 CrNiMo 16 5 1United KingdomB.S.
1.4418FranceAFNOR NF
Remanit 4418GlobalEnterprise standard
415MGlobalEnterprise standard
VIRGO 39GlobalEnterprise standard
BÖHLER N404 EXTRAGlobalEnterprise standard
X 4 CrNiMo 16 5 1FranceAFNOR NF
1.4418European UnionEN
X 4 CrNiMo 16 5 1GermanyDIN
1.4418GermanyDIN