AS 1830 Grey Iron Casting Standard
It is a very common Austrilian Casting stundard, and suitable for various kinds of industry for its advantages:
– High Cost-Effectiveness: Low raw material cost and simple casting process
– Excellent Casting Performance: Good fluidity, suitable for complex-shaped castings
– Good Machinability: Low cutting resistance and low tool wear
– Special Properties: Good wear resistance, high thermal conductivity, and excellent shock absorption performance (graphite flakes absorb vibration)
– High Compressive Strength: Approximately 3-4 times the tensile strength, suitable for structural parts bearing pressure
AS 1830 Grey Iron Casting Equivalent Grade Comparison Table
|
AS 1830 Grade
|
EU EN
|
US ASTM
|
Germany DIN
|
Japan JIS
|
China GB
|
UK BS
|
|---|---|---|---|---|---|---|
|
T150
|
EN-GJL-150
|
CLASS 20
|
GG15
|
FC150
|
HT150
|
150/170
|
|
T180
|
EN-GJL-180
|
CLASS 25
|
GG18
|
FC180
|
HT180
|
180/200
|
|
T220
|
EN-GJL-200
|
CLASS 30
|
GG20
|
FC200
|
HT200
|
200/220
|
|
T275
|
EN-GJL-250
|
CLASS 35
|
GG25
|
FC250
|
HT250
|
250/270
|
|
T300
|
EN-GJL-300
|
CLASS 40
|
GG30
|
FC300
|
HT300
|
300/320
|
|
T350
|
EN-GJL-350
|
CLASS 45
|
GG35
|
FC350
|
HT350
|
350/370
|
|
T400
|
EN-GJL-400
|
CLASS 50
|
GG40
|
FC400
|
HT400
|
400/420
|
AS 1830 Grey Iron Casting Chemical Composition Requirements
|
Element
|
Content Range (%)
|
Function
|
|---|---|---|
|
Carbon (C)
|
3.0-3.6
|
Determines graphite morphology and quantity, affecting fluidity
|
|
Silicon (Si)
|
2.2-3.2
|
Promotes graphitization, improves fluidity and oxidation resistance
|
|
Manganese (Mn)
|
0.5-1.0
|
Controls pearlite content, improves strength and hardness
|
|
Sulfur (S)
|
≤0.12
|
Controls graphite morphology; excessive content impairs mechanical properties
|
|
Phosphorus (P)
|
≤0.15
|
Improves fluidity; excessive content increases brittleness
|
Mechanical Properties (φ30mm Separately Cast Test Pieces)
|
Performance Parameter
|
Unit
|
T220 Value Range
|
Test Standard
|
|---|---|---|---|
|
Tensile Strength (Rm)
|
MPa
|
225-325
|
AS 1391-2007 (equivalent to ISO 6892)
|
|
0.1% Yield Strength (Rp0.1)
|
MPa
|
150-210
|
Reference Value
|
|
Elongation After Fracture (A)
|
%
|
0.3-0.8
|
Typical low plasticity of grey cast iron
|
|
Brinell Hardness (HB)
|
–
|
180-230
|
AS 1816 (equivalent to ISO 6506)
|
|
Compressive Strength
|
MPa
|
780
|
Approximately 3-4 times the tensile strength
|
|
Bending Strength
|
MPa
|
315
|
Reference Value
|
|
Elastic Modulus (E)
|
GPa
|
95-115
|
Depends on graphite morphology and content
|
|
Density
|
kg/dm³
|
7.15
|
Standard Density
|
| 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 |
