10SPb 20 1.0722 - DIN 1651-1988

Grade	10SPb 20
Germany W-Nr.	1.0722
Corresponding Standard	DIN 1651-1988 Free-cutting steels technical delivery conditions
Classification	Carbon Steel
Properties	Machinability Carburizing Ability

10SPb 20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Pb
Minimum Value	0.07	0.1	0.7	-	0.18	0.15
Maximum Value	0.13	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.

10SPb 20 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
bars,Semi-finished products,wires；d≤10	Hot Work (U) or Hot Work and Peeling (U+SH)	360~530			≤159
Bars, semi-finished products, wire rods; 10<d≤16	Hot Work (U) or Hot Work and Peeling (U+SH)	360~530			≤159
Bars, semi-finished products, wire rods; 16<d≤40	Hot Work (U) or Hot Work and Peeling (U+SH)	360~530			≤149
Bars, semifinished products, wire; 40<d≤63	Hot Work (U) or Hot Work and Peeling (U+SH)	360~530			≤149
Bars, semi-finished products, wire rod; 63<d≤100	Hot Work (U) or Hot Work and Peeling (U+SH)	350~490			≤146
bars,Semi-finished products,wires；d≤10	Cold Drawing (K)	540~780	≥410	≥7
Bars, semi-finished products, wire rods; 10<d≤16	Cold Drawing (K)	490~740	≥390	≥8
Bars, semi-finished products, wire rods; 16<d≤40	Cold Drawing (K)	460~710** ≤710	* ≥355	≥9
Bars, semifinished products, wire; 40<d≤63	Cold Drawing (K)	390~640	≥295	≥10
Bars, semi-finished products, wire rod; 63<d≤100	Cold Drawing (K)	360~610	≥235	≥11
bars,Semi-finished products,wires；d≤100	Cold Drawn and Stress Relief (K+S)	≤550

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.

* Order can be agreed to ≥ 390MPa yield point to supply
** Order can be agreed to ≥ 490MPa tensile strength to supply

New and Old Grade Replacement List

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

Approximate Comparison Table

China		United States	International Organization for Standardization	Germany		France
GB	ISC	ASTM/AISI	ISO	DIN EN/DIN	W-Nr.	NF EN/NF
Y12Pb	U72122	11L08	11SMnPb28	10SPb20	1.0722	10PbF2

10SPb20 Corresponding Standards(Same grade name, different standards)

1	ISO 683-9-1988
	10SPb20 Type 4Pb
2	EN 10087-1999
	10SPb20 1.0722
3	EN 10277-3-1999
	10SPb20 1.0722
4	DIN 1651-1988
	10SPb 20 1.0722
5	DIN EN ISO 683-4-2018
	10SPb20
6	ISO 683-4-2016
	10SPb20
7	ISO 683-18-2014
	10SPb20
8	EN 10277-2018
	10SPb20 1.0722
9	NF EN 10087-1999
	10SPb20 1.0722

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