46S20 - ISO 683-4-2016

Grade	46S20
Corresponding Standard	ISO 683-4-2016 Heat-Treatable Steels,Alloy Steels and Free-Cutting Steels--Part 4: Free-Cutting Steels
Classification	Alloy Steel
Properties	Machinability Quench Hardness

46S20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.42	-	0.7	-	0.15
Maximum Value	0.5	0.4	1.1	0.06	0.25

①Elements not quoted shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All reasonable precautions are to be taken to avoid the addition of such elements from scrap and other materials used in manufacture which affect the mechanical properties and the suitability. However, if agreed, the manufacturer can add elements such as Ca, Se,Te, etc. for the purpose of improving the machinability. These elements have to be reported in the inspection document.

46S20 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
5<d≤10	Untreated (U)	590~800			≤234
10<d≤16	Untreated (U)	590~780			≤228
16<d≤40	Untreated (U)	590~760			≤222
40<d≤63	Untreated (U)	580~730			≤213
63<d≤100	Untreated (U)	560~710			≤207
5<d≤10	Quenching and Tempering	700~850	≥490	≥12
10<d≤16	Quenching and Tempering	700~850	≥490	≥12
16<d≤40	Quenching and Tempering	650~800	≥430	≥13
40<d≤63	Quenching and Tempering	630~780	≥370	≥14
63<d≤100	Quenching and Tempering	630~780	≥370	≥14

New and Old Grade Replacement List

Corresponding Standard	Grade
ISO 683-9-1988	Grade ISO Numeric Designation
ISO 683-4-2016	Grade

1 Approximate Comparison Table Free-Cutting Structural Steel

China	United States		International Organization for Standardization	Germany		France	European Standard		Sweden	United Kingdom
GB	ASTM/AISI	UNS	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	SS₁₄	BS EN/BS
Y45	1146	G11460	46S20	45S20	1.0727	45MF4	46SMn20	1.0727	1973	212M44

2 Approximate Comparison Table Free-Cutting Structural Steel

International Organization for Standardization	Germany	European Standard
ISO	DIN EN/DIN	EN	Numerical Grade
46S20	45S20	46S20	1.0727

46S20 Corresponding Standards(Same grade name, different standards)

1	ISO 683-9-1988
	46S20 Type 10
2	EN 10087-1999
	46S20 1.0727
3	DIN EN ISO 683-4-2018
	46S20
4	ISO 683-4-2016
	46S20
5	ISO 683-18-2014
	46S20
6	EN 10277-2018
	46S20 1.0727
7	NF EN 10087-1999
	46S20 1.0727

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