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Grade GG-20
Germany W-Nr. 0.6020
Corresponding Standard DIN 1691-1985
Cast iron with lamellar graphite (grey cast iron); properties
Classification cast Iron
Density 7.15 g/cm3
GG-20 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Hardness
HBW
casting; 2.5 < t ≤ 300; independent casting sample Casting State 200~300
Castings; 20＜t≤40; casting body sample Casting State ≥170
Castings; 40＜t≤80; casting body sample Casting State ≥150
Castings; 80＜t≤150; casting body sample Casting State ≥140
Castings; 150＜t≤300; casting body sample Casting State ≥130
Castings; t≤80 Casting State ≥160
Castings; 80＜t≤150 Casting State ≥150
Castings; 150＜t≤300 Casting State -
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 1691-1985
Grade
Germany W-Nr.
DIN EN 1561-1997
Grade
Germany W-Nr.
Old Grade
Old Grade
DIN EN 1561-2023
Grade
Germany W-Nr.
Old Grade
Approximate Comparison Table cast iron
China Taiwan, China Japan United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom Australia
GB CNS JIS ASTM SAE ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS Australian Standard AS
HT20-40
HT200 		FC200 FC200 200/225
25B
30
30B 		G10H18 200
JL200 		GG20 0.6020 FGL200
Ft20D 		EN-GJL-200 EN-JL1030 SCH20 01-20-00
0120 		180
200/220
220
Grade180
Grade260 		T220
GG-20 Corresponding Standards(Same grade name, different standards)
1 DIN 1691-1985
GG-20 0.6020
2 DIN EN 1561-1997
(GG-20) EN-GJL-200 EN-JL1030 (0.6020)

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