S420N 1.8902 Welding Neck Flanges - EN 10025-3 Compliant Forged Steel Flanges
Product Summary
S420N (1.8902) welding neck flanges made from forged steel. Certified to EN 10025-3 and EN 10113-2 standards, offering high tensile strength (520-680 MPa) and excellent impact resistance. Ideal for demanding structural applications requiring durability and weldability.
Product Details
Highlight:
S420N welding neck flanges
,1.8902 steel forged flanges
,forged steel welding neck flanges
Material:
S420N
Steel Number:
1.8902
Type:
Welding Neck Flanges
Flanges:
Forged Steel Flanges
Product Description
S420N Welding Neck Flanges
Grade: S420N | Number: 1.8902 | Classification: Alloy special structural steel
Standards Compliance
- EN 10025-3:2004 - Hot rolled products of structural steels. Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels
- EN 10113-2:1993 - Hot-rolled products in weldable fine grain structural steels. Delivery conditions for normalized/normalized rolled steels
Chemical Composition (%) - EN 10025-3-2004
Nominal thickness ≤ 63mm: CEV max = 0.48
Nominal thickness 63-100mm: CEV max = 0.50
For long products, P and S content can be 0.005% higher. For railway applications, maximum S content of 0.01% may be agreed upon. Cu content above 0.4% may cause hot shortness during hot forming.
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Ti | Al | Cu | CEV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max 0.2 | max 0.6 | 1-1.7 | max 0.8 | max 0.03 | max 0.025 | max 0.3 | max 0.1 | max 0.2 | max 0.025 | max 0.05 | max 0.05 | max 0.02 | max 0.55 | max 0.52 |
Mechanical Properties
Tensile Strength (Rm)
| Nominal Thickness (mm) | to 100 | 100-200 | 200-250 |
|---|---|---|---|
| Rm - Tensile Strength (MPa) | 520-680 | 500-650 | 500-650 |
Minimum Yield Strength (ReH)
| Nominal Thickness (mm) | to 16 | 16-40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-200 | 200-250 |
|---|---|---|---|---|---|---|---|---|
| ReH - Min Yield Strength (MPa) | 420 | 400 | 390 | 370 | 360 | 340 | 330 | 320 |
Impact Energy (KV) - Longitudinal (+N)
| Temperature | +20°C | 0°C | -10°C | -20°C |
|---|---|---|---|---|
| KV - Impact Energy (J) | 55 | 47 | 43 | 40 |
Impact Energy (KV) - Transverse (+N)
| Temperature | +20°C | 0°C | -10°C | -20°C |
|---|---|---|---|---|
| KV - Impact Energy (J) | 31 | 27 | 24 | 20 |
Minimum Elongation (A) - Lo = 5.65√So (%)
| Nominal Thickness (mm) | to 16 | 16-40 | 40-63 | 63-80 | 80-200 | 200-250 |
|---|---|---|---|---|---|---|
| A - Min Elongation (%) | 19 | 19 | 19 | 18 | 18 | 18 |
Equivalent Grades
| EU EN | USA | Germany DIN,Wnr | Japan JIS | France AFNOR | European Old EN | Italy UNI | Spain UNE | China GB | Russia GOST | Inter ISO |
|---|---|---|---|---|---|---|---|---|---|---|
| S420N | A255Gr.D A633E | StE420 | SM490A SM490C | E420R | FeE420KGN | FeE420KGN | AE420KG | Q420D | 16G2AF | E420 |
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