EN 1561 Grey Iron Casting is EU Grey Cast Irons Standard, and EU contries convert to their own standard, such as Genmany DIN EN 1561, BS EN 1561, etc
Based on its tensile strength, the classificaiton as below:
| Grade | Min. Tensile Strength (MPa) | Old DIN 1691 Equiv. | Typical Matrix | Typical Applications |
|---|---|---|---|---|
| EN‑GJL‑150 | 150 | GG15 | Ferrite | Covers, brackets, light components |
| EN‑GJL‑200 | 200 | GG20 | Ferrite‑pearlite | Pumps, valves, general parts |
| EN‑GJL‑250 | 250 | GG25 | Pearlite | Machine beds, engine blocks |
| EN‑GJL‑300 | 300 | GG30 | Pearlite | Crankcases, heavy machinery |
| EN‑GJL‑350 | 350 | GG35 | Pearlite + carbide | High‑strength housings |
| EN‑GJL‑400 | 400 | GG40 | Pearlite + carbide | High‑stress, wear parts |
The table below shows direct equivalents across major standards, based on minimum tensile strength (MPa):
| EN 1561:2023 | ISO 185:2023 | DIN 1691 (Old) | ASTM A48 | JIS G5501 | GB/T 9439 | GOST 1412 |
|---|---|---|---|---|---|---|
| EN‑GJL‑150 | JL/150 | GG15 | Class 20 | FC150 | HT150 | СЧ15 |
| EN‑GJL‑200 | JL/200 | GG20 | Class 25 | FC200 | HT200 | СЧ20 |
| EN‑GJL‑250 | JL/250 | GG25 | Class 30 | FC250 | HT250 | СЧ25 |
| EN‑GJL‑300 | JL/300 | GG30 | Class 35 | FC300 | HT300 | СЧ30 |
| EN‑GJL‑350 | JL/350 | GG35 | Class 40 | FC350 | HT350 | СЧ35 |
| EN‑GJL‑400 | JL/400 | GG40 | Class 45 | FC400 | HT400 | СЧ40 |
| Manufacturing Method | Sand Casting(Resin Sand, Pre-Coated Sand, Clay Sand, Water glass sand, Green Sand,lost foam ) |
| Material Standard | GB, ANSI, BS, DIN, JIS, ASTM, ASME, AISI, etc carbon steel, low carbon steel, middle carbon steel, G35, G45, WCB, WCA, WCC, ISO 340-550, etc. Alloy Carbon steel: G25CrMo4, Heat Resistant Steel, etc. Stainless Steel: SUS 304, 304L, 316, 316L, CF8, CF8M, G-X7CrNiNb1189, etc. AS2074 or according to customer specific requirement. Ductile Iron:A536-Gr.60-40-18,GGG40,GGG50,FCD40,FCD50,Gr370-17,Gr420-12,etc Grey Iron:A48-No.20,25,30,GG10,GG15,GG20,FC10,FC15,FC20,Grade 150,180,220,FGL150,FGL200,FGL250,etc |
| Weight Range | 1 kg to 100 Tons |
| General Casting Tolerance | CT8-CT12 |
| Design Software | UG, Pro-E, Inventor |
| Dwg Format | STP, STEP, IGS,STP,X_T ,DXF,DWG , Pro/E, PDF, SLDPRT |
| Mould Manufacturing | Yes |
| Casting Stimulation | Yes |
| Ultimate machining tolerance | 0.005mm |
| Quality Control | RT,UT,MT,PT,CMM,SCAN,Chemical and Mechanical Property Testing,Spectrometer,etc |
| Finish Roughness | Ra12.5-Ra25 according to customer requirement |
| Logo/ID | Silk-screening, Laser Marking, Engrave,Painting |
| Heat Treatment | Normalization, Annealing, Quenching and Tempering, Case Hardening, Nitriding, Carbon Nitriding, Induction Quenching,etc |
| Surface Treatment | Shot/sand blast, Polishing, Surface Passivation, Painting , Anodizing,Powder coating, ED- Coating, Chrome Plating, zinc-plate, Dacromat coating, Finish Painting,hot-dip galvanizing, etc |
