35S20 1.0726 - DIN 1651-1988

Grade	35S20
Germany W-Nr.	1.0726
Corresponding Standard	DIN 1651-1988 Free-Cutting Steels Technical Delivery Conditions
Classification	Carbon Steel
Properties	Machinability Quench Hardness

35S20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P ^*	S
Minimum Value	0.32	0.1	0.7	-	0.18
Maximum Value	0.39	0.3	1.1	0.06	0.25

①Elements not listed in the table (except for finishing the cast) shall not be intentionally add to the steel. Such introduction may only be agreed upon with the customer if it can be demonstrated to improve machinability.

35S20 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Bar, semi-finished product, wire; t ≤ 10	Hot Work (U) or Hot Work and Peeling (U+SH)	490~660			≤197
Bar, semi-finished products, wire rod; 10 < t ≤ 16	Hot Work (U) or Hot Work and Peeling (U+SH)	490~660			≤197
Bar, semi-finished products, wire rod; 16 < t ≤ 40	Hot Work (U) or Hot Work and Peeling (U+SH)	490~660			≤192
Bar, semi-finished products, wire rod; 40 < t ≤ 63	Hot Work (U) or Hot Work and Peeling (U+SH)	490~640			≤192
Bar, semi-finished products, wire rod; 63 < t ≤ 100	Hot Work (U) or Hot Work and Peeling (U+SH)	480~630			≤137
Bar, semi-finished product, wire; t ≤ 10	Cold Drawing (K)	640~880	≥480	≥6
Bars, semi-finished products, wire rods; 10<d≤16	Cold Drawing (K)	590~830	≥400	≥7
Bars, semi-finished products, wire rods; 16<d≤40	Cold Drawing (K)	540~740	≥315	≥8
Bars, semifinished products, wire; 40<d≤63	Cold Drawing (K)	510~710	≥285	≥9
Bars, semi-finished products, wire rod; 63<d≤100	Cold Drawing (K)	480~680	≥255	≥10
Bar, Semi-finished, Wire; d≤63	Cold Drawn and Stress Relief (K+S)	≤680
Bar, semi-finished product, wire; t ≤ 10	Pickled and Tempered (SH+V) or Cold Drawn and Tempered (K+V)	620~760	≥420	≥13
Bars, semi-finished products, wire rods; 10<d≤16	Pickled and Tempered (SH+V) or Cold Drawn and Tempered (K+V)	620~760	≥420	≥14
Bars, semi-finished products, wire rods; 16<d≤40	Pickled and Tempered (SH+V) or Cold Drawn and Tempered (K+V)	580~730	≥365	≥16
Bars, semifinished products, wire; 40<d≤63	Pickled and Tempered (SH+V) or Cold Drawn and Tempered (K+V)	540~690	≥325	≥17

①A structure is usually defined first, followed by heat treatment (e.g., K+V). When the sequence is reversed, especially for steels such as 45S20, 45SPb20, and 60SPb20, the values to be complied with must be agreed upon.
②The minimum transverse elongation in a tensile test applies to steels 9Mn28, 9SMnPb28, 15S10, 10S20, and 10SPb20 in structural or heat-treated states U+SH and K+S.
③Round bars exceeding 50mm in diameter are generally supplied in a peeled condition rather than cold-drawn.

New and Old Grade Replacement List

Corresponding Standard	Grade
DIN 1651-1988	Grade Germany W-Nr.
DIN EN ISO 683-4-2018	Grade

1 Approximate Comparison Table Free-Cutting Structural Steel

China		United States	International Organization for Standardization	Germany		France	European Standard		Sweden	United Kingdom
GB	ISC	ASTM/AISI	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	SS₁₄	BS EN/BS
Y35 Y30	U70352	1140	35S20	35S20	1.0726	35MF6	35S20	1.0726	1957	212M36

2 Approximate Comparison Table Free-Cutting Structural Steel

China	United States	International Organization for Standardization	Germany	France	European Standard		Sweden	United Kingdom
GB	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	SS	BS EN/BS
Y35	1140	35S20	35S20	35MF6	35S20	1.0726	1957-03	212M36

3 Approximate Comparison Table Free-Cutting Structural Steel

China	United States	Germany		France	European Standard	Russia	United Kingdom
GB	ASTM	DIN EN/DIN	W-Nr.	NF EN/NF	EN	GOST	BS EN/BS
Y30	1132	35S20	1.0726	35S20	35S20	A30	35S20

4 Approximate Comparison Table Free-Cutting Steel 1

United States	Germany	France	United Kingdom
ASTM	DIN EN/DIN	NF EN/NF	BS EN/BS
1104	35S20	35MF4	212M36

35S20 Corresponding Standards(Same grade name, different standards)

1	ISO 683-9-1988
	35S20 Type 7
2	EN 10087-1999
	35S20 1.0726
3	EN 10277-3-1999
	35S20 1.0726
4	DIN 1651-1988
	35S20 1.0726
5	DIN EN ISO 683-4-2018
	35S20
6	ISO 683-4-2016
	35S20
7	ISO 683-18-2014
	35S20
8	EN 10277-2018
	35S20 1.0726
9	NF EN 10087-1999
	35S20 1.0726

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