35SPb20 1.0756 - DIN 1651-1988

Grade	35SPb20
Germany W-Nr.	1.0756
Corresponding Standard	DIN 1651-1988 Free-cutting steels technical delivery conditions
Classification	Carbon Steel
Properties	Machinability Quench Hardness

35SPb20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Pb
Minimum Value	0.32	0.1	0.7	-	0.18	0.15
Maximum Value	0.39	0.3	1.1	0.06	0.25	0.35

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.

35SPb20 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

35SPb20 Corresponding Standards(Same grade name, different standards)

1	EN 10277-3-1999
	35SPb20 1.0756
2	DIN 1651-1988
	35SPb20 1.0756
3	DIN EN ISO 683-4-2018
	35SPb20
4	ISO 683-4-2016
	35SPb20
5	ISO 683-18-2014
	35SPb20
6	EN 10277-2018
	35SPb20 1.0756
7	NF EN 10087-1999
	35SPb20 1.0756

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