Grade 9S20
Germany W-Nr. 1.0711
Corresponding Standard DIN 1651-1970
Free-cutting steel; technical delivery conditions
Classification Carbon Steel
Properties Machinability
9S20 Chemical Element Composition Content (%)
Component C Si Mn P S
Minimum Value - - 0.6 - 0.18
Maximum Value 0.13 0.05 1.2 0.1 0.25
9S20 Mechanical Properties
diameter(or thickness)
d
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Bar, Large square billets, Coil; dt≤16 Cold Drawing (K) 550~800 ≥420 ≥7
Bar, Large square billets, Coil; 10<d≤16 Cold Drawing (K) 500~750 ≥400 ≥8
Bar stock, large billets, coil bars; d≤16 Cold Drawing and Normalizing (K+N) ≥360 ≥230 ≥25
Bar stock, large billets, coil bars; d≤16 Hot Working (U) or Hot Working + Scarfing (U+SH) 370~540 ≤159
Approximate Comparison Table Free-Cutting Steel 1
Japan United States Germany United Kingdom
JIS ASTM DIN EN/DIN BS EN/BS
SUM21 1212 9S20 220M07
9S20 Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!