S143 Aircraft Steel S144, S145

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Quality - BS EN 9120:2005, / ISO 9001:2008

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Data Sheet:

Corrosion Resisting Steel S143/ S144/ S145

Chemical Composition Limits

Weight %

P+S max

Others

2S143 3S144 3S145

0.07 max

0.60 max

1.0 max

0.035 P

0.025 S

13.20 / 14.70

5.00 / 5.80

1.20 / 2.00

Cu 1.20/2.00

Nb 0.10/0.40

MECHANICAL PROPERTIES OF ROLLED BAR (Longitudinal Direction)

Condition	0.2% Proof Stress (N/mm) min	Tensile Strength (N/mm)	Elongation 5D % min	Hardness Brinell	Izod Joules	Fatigue (Wohler) 10 revs N/mm (typical)	* B.S. Aerospace Equivalent	*Def Stan 95-14 Cond.**
1050°AC +2hrs 750/850°AC	-	-	-	293 / 341	-	-	-	D
1050°AC +4hrs 450°AC ¥	1030	1170/1310	12	352/401	27	+508	2S144	H
Solution treatment at the lower end of the range gives improved ductility with a slight fall off in tensile properties.
1050°AC +2hrs 750°AC +2hrs 550°AC	800	925/1080	15	277/341	54	+555	2S143	F
1050°AC +2hrs 750°AC +2hrs 620°AC	540	850/1000	20	255/302	80	+585	-	G
950°AC	-	-	-	302/363	-	-	-	B
950°AC +2/4hrs 450°AC ¥	1030	1265/1465	10	375/429	20	460	2S145	-
620°AC	-	-	-	269/321	-	-	-	A

*: Orders placed to BS2S143, 144, 145 and Def Stan 95-14 would meet the full specification requirements.

¥: User Heat Treatments

No similar specifications to offer

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Disclaimer

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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