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Grade GS-20Mn5
Germany W-Nr. 1.1120
Other Names
Corresponding Standard DIN 17182-1992
General Purpose Steel Castings with Enhanced Weldability and Higher Toughness - Technical Delivery Condition
Classification Cast Steel
GS-20Mn5 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 0.17 - 1 - - - - -
Maximum Value 0.23 0.6 1.5 0.02 0.015 0.3 0.4 0.15
GS-20Mn5 Mechanical Properties
wall thickness
t
mm		 Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Impact Energy Absorption
KV2
J
t≤50 GS-20Mn5N Normalizing (N) 500~650② ≥300②③ ≥22(A5) Room temperature: ≥55④
-20°C: ≥27
50＜t≤100 Normalizing (N) 500~650② ≥280②③ ≥22(A5) Room temperature: ≥40④
-10°C: ≥27
100＜t≤160 Normalizing (N) 480~630② ≥260②③ ≥20(A5) 0°C：≥27
t＞160 Normalizing (N) 450~600② ≥240②③
t≤50 GS-20Mn5V Quenching + Tempering (V) 500~650② ≥360②③ ≥24(A5) Room temperature: ≥70④
-30°C: ≥27
50＜t≤100 Quenching + Tempering (V) 500~650② ≥300②③ ≥24(A5) Room temperature: ≥50④
-20°C: ≥27
100＜t≤160 Quenching + Tempering (V) 500~650② ≥280②③ ≥22(A5) Room temperature: ≥40④
-10°C: ≥27
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 17182-1992
Grade
Germany W-Nr.
Other Name
Other Name
DIN EN 10293-2005
Grade
Germany W-Nr.
1 Approximate Comparison Table Cast Steel
China Japan United States Germany France Russia
GB JIS ASTM UNS DIN EN/DIN W-Nr. NF EN/NF GOST
ZG20SiMn SCW480 LCC J02505 GS-20Mn5 1.1120 FB-M 20ГСЛ
2 Approximate Comparison Table Steel castings for pressure purposes
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS14 BS EN/BS
ZG280-520 SCPH2 SCPH2 SCPH2 WCB J03101 G280 GS-20Mn5 1.1120 A480CP-M ≈20ГСЛ 1305 GP280GH

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