Delivery program

Material shape

round bars
tubes
square/rectangle
round bars
buses
square/flat

View delivery program

Material shape

round
tube
square

Cast Iron

Product Information

On this page:

Maatmetaal carries a wide range of round bars, tubes and rectangles in both Grey/Flake Iron (EN-GJL / GG) and SG/Nodular Iron (EN-GJS / GGG).

With a stock of around 1,500 tonnes, delivery times are kept to a minimum and you rarely miss out.
Using our extensive machinery, we produce bushings and rings in the dimensions you require. Quickly, accurately and at a competitive price. We are also the right place for discs and sawing work. Our fully automatic band and circular saws run day and night for you.

Grey/Flake Iron (EN-GJL / GG)

Product Features

In Grey/Flake Iron (EN-GJL / GG) cast iron, the free carbon takes the form of lamellae. The microscopic magnification below shows this clearly. The cast iron thus formed is characterized by good tensile strength, density and wear resistance. Grey/Flake Iron (EN-GJL / GG) also has a high vibration damping capacity.

General Information DIN EN ASTM
Standard EN 16482, EN 1561, DIN 1691 A48
Designation EN-GJL-250 class 40
Alt. designations GG25, Meehanite-GD
Material number 5.1203, EN-JL1040, 0.6025
Soil mass perlitic/ferritic
Chemical composition %
C 2,00 – 3,70
Si 1,80 – 2,90
Mn 0,40 – 0,80
S 0.20 max.
P 0.30 max.
Mechanical properties HB min(10/3000) Rm min(N/mm2)
Separately cast test rod 215 250
Sample from workpiece
20 < D ≤ 50 200 195
50 < D ≤ 100 170 180
100 < D ≤ 200 145 165
200 < D ≤ 400 – 155
Learn more
Density kg/dm3 approx. 7.2
Features This is the most common cast iron alloy. Offers a good combination between strength and wear resistance, while still being easy to machine and having a nice finish. Grey/Flake Iron (EN-GJL / GG) with predominantly perlitic structure. Heat treatment for increasing hardness not recommended.
Applications Piston rings, small cylinder liners, valves, manifolds, wheels, air and water cooled cylinders, brake drums for cars, clutch plates.

General Information DIN EN ASTM
Standard EN 16482, EN 1561, DIN 1691 A48
Designation EN-GJL-300 class 45
Alt. designations GG30, Meehanite-GB
Material number 5.1308, EN-JL1050, 0.6030
Soil mass predominantly perlitic
Chemical composition %
C 2,00 – 3,70
Si 1,80 – 2,90
Mn 0,40 – 0,80
S 0.20 max.
P 0.30 max.
Mechanical properties HB min(10/3000) Rm min(N/mm2)
Separately cast test rod 235 300
Sample from workpiece
20 < D ≤ 50 200 220
50 < D ≤ 100 180 205
100 < D ≤ 200 165 195
200 < D ≤ 400 – 185
Learn more
Density kg/dm3 approx. 7.2
Features Offers higher wear resistance, stretch limit compared to GG20 and GG25, but still possesses good machining properties and has a nice finish. By heat treatment, the material can be hardened to about 50 Rc on the surface.
Applications Very suitable for machine parts subject to high stresses such as: diesel, gas and steam plants, drums and parts for cranes, wheels, gears.

SG/Nodular Iron (EN-GJS / GGG)

Product Features

In ductile iron, special metallurgical techniques separate the graphite not in the form of fins but in spherical form (nodules). Ductile cast iron is characterized by very high tensile strength and elasticity.

General Information DIN EN ASTM
Standard EN 16482, EN 1563, DIN 1693 A536
Designation EN-GJS-400-15 class 65-45-12
Alt. designations GGG40, Meehanite SF 40
Material number 5.3126, EN-JS1030, 0.7040
Ground mass ferritic
Chemical composition %
C 3,30 – 3,40
Si 2,40 – 3,10
Mn 0.20 max.
S 0.020 max.
P 0.10 max.
Mg2 0,03 – 0,05
Mechanical properties HB min(10/3000) Rm min(N/mm2) Rp0.2 A5
Separately cast test rod 175 400 250 15
Sample from workpiece
20 < D ≤ 60 190 400 250 15
60 < D ≤ 120 – 390 250 14
120 < D ≤ 400 140 370 240 11
Learn more
kg/dm3 approx. 7.2
Features This is the most common alloy ductile iron. Ductile cast iron with a predominantly ferritic structure. Offers excellent machining properties combined with good impact resistance, high elongation, electrical conductivity and magnetic permeability. For applications below 0 degrees celcius, a special variant (GGG40.3 or EN-GJC400-18-LT) is available with an extra high impact value.
Applications EN-GJS-400-15 (GGG40) is specifically applied in parts such as structural components, fastening systems, engine components and agricultural machinery, where good ductility and machinability are required.

General Information DIN EN ASTM
Standard EN 16482, EN 1563, DIN 1693 A536
Designation EN-GJS-400-18 class 60-40-18
Alt. designations GGG40.3, Meehanite SFF 40
Material number 5.3125, EN-JS1020, 0.7043
Ground mass ferritic
Chemical composition %
C 3,30 – 3,40
Si 2,40 – 3,10
Mn 0.20 max.
S 0.020 max.
P 0.10 max.
Mg2 0,03 – 0,05
Mechanical properties HB min(10/3000) Rm min(N/mm2) Rp0.2 A5
Separately cast test rod 175 400 250 18
Sample from workpiece
20 < D ≤ 60 190 400 250 18
60 < D ≤ 120 – 390 250 15
120 < D ≤ 400 140 370 240 12
Learn more
kg/dm3 approx. 7.1
Features Provides slightly higher notch strength and ductility than EN-GJS-400-15 (GGG40), reflected in its higher elongation at break of 18%. It is slightly tougher and more resistant to deformation than EN-GJS-400-15. EN-GJS-400-18 has better properties at lower temperatures than EN-GJS-400-15. This is due to its higher ductility, making it less likely to become brittle and more resistant to thermal shock.

General Information DIN EN ASTM
Standard EN 16482, EN 1563, DIN 1693 A536
Designation EN-GJS-400-7 class
Alt. designations GGG40, Meehanite
Material number 5.3202
Ground mass ferritic/perlitic
Chemical composition %
C 3,30 – 3,40
Si 2,40 – 3,10
Mn 0.20 max.
S 0.020 max.
P 0.10 max.
Mg2 0,03 – 0,05
Mechanical properties HB min(10/3000) Rm min(N/mm2) Rp0.2 A5
Separately cast test rod 175 400 250 7
Sample from workpiece
20 < D ≤ 60 190 400 250 7
60 < D ≤ 120 – 390 250 7
120 < D ≤ 400 140 370 240 11
Learn more
kg/dm3 approx. 7.2
Features Similar to EN-GJS-400-15, however, with a slightly lower elongation (A) of 7% instead of 15%. Essentially, both types of ductile iron offer the same tensile strength, but they are produced differently to maximize their specific properties (ductility vs. toughness) depending on the application

General Information DIN EN ASTM
Standard EN 16482, EN 1563, DIN 1693 A536-84
Designation EN-GJS-500-7 class 80-55-06
Alt. designations GGG50, Meehanite SFP50
Material number 5.3203, EN-JS1050, 0.7050
Ground mass ferritic/perlitic
Chemical composition %
C 3,40 – 3,85
Si 2,30 – 3,10
Mn 0,10 – 0,30
S 0.020 max.
P 0.10 max.
Mechanical properties HB min(10/3000) Rm min(N/mm2) Rp0.2 A5
Separately cast test rod 200 500 320 7
Sample from workpiece
20 < D ≤ 60 240 500 320 7
60 < D ≤ 120 – 450 300 7
120 < D ≤ 400 170 420 290 5
Learn more
kg/dm3 approx. 7.2
Features EN-GJS-500-7 is a ductile iron that exhibits a ferritic/perlitic microstructure. This material is characterized by high tensile strength and adequate yield strength, which also provides good ductility. Compared to EN-GJS-400-15 (GGG40), EN-GJS-500-7 (GGG50) is more resistant to wear. In addition, it has excellent machinability properties and is suitable for use at temperatures up to about 450 °C.
Applications EN-GJS-500-7 (GGG50) is often used in the automotive industry for parts such as crankshafts, gears and other structural components that require high strength and toughness. It is also suitable for use in mechanical engineering and construction applications, where wear and impact resistance are essential.

General Information DIN EN ASTM
Standard EN 16482, EN 1563, DIN 1693 A536-84
Designation EN-GJS-600-3 class 80-60-03
Alt. designations GGG60, Meehanite SFP60
Material number 5.3204, EN-JS1060, 0.7060
Soil mass perlitic/ferritic
Chemical composition %
C 3,25 – 3,70
Si 2,40 – 3,00
Mn 0,10 – 0,40
S 0.020 max.
P 0.08 max.
Mechanical properties HB min(10/3000) Rm min(N/mm2) Rp0.2 A5
Separately cast test rod 250 600 370 3
Sample from workpiece
20 < D ≤ 60 290 600 370 3
60 < D ≤ 120 – 600 360 2
120 < D ≤ 400 200 550 340 1
Learn more
kg/dm3 approx. 7.3
Features EN-GJS-600-3 (GGG60) is a ductile iron with a high tensile strength of about 600 MPa, excellent toughness and good wear resistance, making it suitable for demanding applications in the mechanical and automotive industries. It has a spheroidal graphite structure that provides good ductility and resistance to shock loading.
Applications Forging dies, rotors, shafts, gears, tap wheels, high-pressure valves for gas and water, compressed air equipment, compressors, pumps.

General Information DIN EN ASTM
Standard EN 16482, EN 1563, DIN 1693 A536-84
Designation EN-GJS-700-2 class 100-70-03
Alt. designations GGG70, Meehanite SFP70
Material number 5.3303, EN-JS1070, 0.7070
Soil mass Predominantly perlitic
Chemical composition %
C 3,25 – 3,70
Si 2,40 – 3,00
Mn 0,10 – 0,40
S 0.020 max.
P 0.08 max.
Mechanical properties HB min(10/3000) Rm min(N/mm2) Rp0.2 A5
Separately cast test rod 270 700 420 2
Sample from workpiece
20 < D ≤ 60 305 700 420 2
60 < D ≤ 120 – 700 400 2
120 < D ≤ 400 210 660 380 2
Learn more
kg/dm3 approx. 7.3
Features EN-GJS-700-2 offers improved wear resistance, increased strength with superior response to heat treatment compared to other nodular grades, while still having reasonable machinability and excellent surface finish. Noise and vibration damping are good in this grade
Applications EN-GJS-700-2 (GGG70) is specifically applied in components such as heavily loaded gears, crankshafts, hydraulic components, and machine parts requiring high wear resistance and strength in the automotive and heavy engineering industries.

Machining allowances cast iron

Continuously cast iron
Round bar/tube

Diameter bar/bus GG GGG
Ø 20 – Ø 50 + 4 mm Ø + 5 mm Ø
Ø 50 – Ø 100 + 6 mm Ø + 7 mm Ø
Ø 100 – Ø 200 + 8 mm Ø + 9 mm Ø
Ø 200 – Ø 300 + 12 mm Ø + 13 mm Ø
Ø 300 – Ø 400 + 14 mm Ø + 15 mm Ø
Ø 400 – Ø 500 + 18 mm Ø + 19 mm Ø
Ø 500 – Ø 650 + 22 mm Ø + 23 mm Ø
Larger than Ø 650 mm is often pre-turned.
Please inquire!

Continuously cast iron
square/rectangle

square/rectangle GG GGG
Surcharge per side
20 – 50 mm + 3.0 mm + 3.5 mm
50 – 100 mm + 4.0 mm + 4.5 mm
100 – 200 mm + 5.0 mm + 5.5 mm
200 – 300 mm + 7.0 mm + 7.5 mm
300 – 400 mm + 8.0 mm + 8.5 mm
400 – 500 mm + 10.0 mm + 10.5 mm
500 – 650 mm + 12.0 mm + 12.5 mm

Production capabilities

Cast Iron

Tube manufacturing

Cast Iron tubes are manufactured in-house at Maatmetaal. Using long-hole drilling machines, the core is drilled out of a solid bar. For hole sizes from Ø 40 mm up to Ø 680 mm, you have come to the right place. But we are also the right partner for dimensions outside this size range.

Ring Manufacturing

An absolute novelty at this time is the computer-controlled, integrated turning/sawing machine with a capacity of up to Ø 1200 mm. This machine has been specially developed for Maatmetaal to our own specifications and enables us to pre-turn the tubes we produce and cut them to length with unprecedented dimensional accuracy in one set-up.

Sawing

Maatmetaal has various band and circular saw machines for cutting bars, tubes and blocks. Sheaves and blocks can be processed up to Ø 1080 mm. Rings up to Ø 1200 mm. In our branch office in Tauberbischofsheim, we have at our disposal a block saw with a capacity of 700 x 600 x 4000 mm.

Milling

Also in Tauberbischofsheim, square and rectangle dimensions are pre-milled on duplex milling machines.
Two-sided, four-sided or six-sided with a tolerance of up to +/- 0.2 mm.