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Chemical composition (nominal) %

C	Si	Mn	P	S	Cr	Ni	Mo	B
≤0.030	0.4	1.7	≤0.030	≤0.015	17.5	12.5	2.2	0.002

t 20°C (68°F)

Proof strength				Tensile strength		Elong.
Rp0.21)		Rp1.01)		Rm		A2)
MPa	ksi	MPa	ksi	MPa	ksi	%
≥260	≥38	≥300	≥44	550-750	80-109	≥35

1 MPa = N/mm2
1) Rp0.2 and Rp1.0 correspond to 0.2% offset and 1.0% offset yield strength, respectively.
2) Based on L0 = 5.65 √S0 where L0 is the original gauge length and S0 the original cross-section area.

Impact strength

Due to its austenitic microstructure, Sandvik 3R69 has very good impact strength both at room temperature and at cryogenic temperatures.

Tests have demonstrated that the steel fulfils the requirements (60 J (44 ft-lb) at -196oC (-320 oF)) according to the European standards EN 13445-2 (UFPV-2) and EN 10216-5.

At high temperatures

Metric units

Temperature	Proof strength
	Rp0.2	Rp1.0
°C	MPa	MPa
	min.	min.
50	234	273
100	205	240
150	187	220
200	170	200
250	159	189
300	148	178
350	141	171
400	134	164
450	130	160
500	127	157
550	124	154

Imperial units

Temperature	Proof strength
	Rp0.2	Rp1.0
°F	ksi	ksi
	min.	min.
100	36.1	41.2
200	30.3	35.4
300	27.2	32.0
400	24.5	28.9
500	22.7	27.1
600	21.0	25.5
700	20.0	24.4
800	19.1	23.5
900	18.6	22.9
1000	18.1	22.4

Creep rupture strength

Temperature		10 000 h		100 000 h
°C	°F	MPa	ksi	MPa	ksi
		approx.	approx.	approx.	approx.
550	1020	290	42.1	220	31.9
560	1040	272	39.4	202	29.3
570	1060	254	36.8	186	30.0
580	1075	237	34.4	170	24.7
590	1095	220	31.9	155	22.5
600	1110	205	29.7	141	20.4
610	1130	190	27.6	127	18.4
620	1150	174	25.2	114	16.5
630	1165	162	23.5	102	14.8
640	1185	148	21.5	92	13.3
650	1200	135	19.6	83	12.0
660	1220	122	17.7	75	10.9
670	1240	112	16.2	68	9.9
680	1255	102	14.8	61	8.8
690	1275	93	13.5	56	8.1
700	1290	84	12.2	52	7.5
710	1310	78	11.3	48	7.0
720	1330	71	10.3	45	6.5
730	1345	65	9.4	41	5.9
740	1365	58	8.4	37	5.4
750	1380	52	7.5	34	4.9
760	1400	48	7.0	31	4.5