660B

Alias

1.4980
X6NiCrTiMoVB 25 15 2
660
S66286
EN10209
UNS S66286
ASTM A453/A638
660B
NF A35-558
DTD 5076 1969
B54882 Bi7B
AMS 5731/5732/5737/5525
B51506 286531
662F20

Chemistry

Base Element Fe(Iron)

Element	Min	Max
Al(Aluminium)		0.35%
B(Boron)	0.001%	0.01%
C(Carbon)		0.08%
Cr(chromium)	13.5	16%
Mn(Manganese)	2%
Mo(Molybdenum)	1%	1.5%
Ni(Nickel)	24%	27%
P(Phosphorus)		0.04%
S(Sulphur)		0.03%
Si(Silicon)		1%
Ti(Titanium)	1.9%	2.35%
V(Vanadium)	0.1%	0.5%

Mechanical Property	Min	Max
Ultimate Tensile Strength (UTS)	895 MPa
2% Proof Stress	585 MPa
Elongation	40 %
Gauge Length	A4D
Hardness (Brinell)	248	341 HB
Hardness(Rockwell C)	24	37 HRC
Reduction of area	18%

Heat Treatment;
Solution treatment: 980 + or – 14 degs C, hold 1h, min, and liquid quench.
Hardening treatment: 720 + or – 14 degs C, hold 16h, air cool.

Uses

Bolting
Used as fasteners for pressure vessels and valve flanges in high temperature services.

ASTM A453 660B HEX BOLT

Comparables

ASTM A638
X5NiCrTi26-15
X5NiCrTiMoVB25 15 2
X5NiCrTiMoVB25 15 2 PH
X4NiCrTi25 15
X4NiCrTi25 15

1.4606
1.4944
1.2779
1.4943 LW

286S31
DTD 5076
HR251
HR52
HR51
662F20
Z3NCT25
E-Z6NCT25(AIR)
AICMA FE-PA92-HT
Z3NCT25
Z6NCT25
0Cr15Ni25Ti2MoAlVB
T200 Extra
AMS 5731
AMS 5732
AMS 5734
AMS 5737
AMS 5525

HR51
HR525
HR650

Disclaimer:
Information is given for illustrative purposes only. Tachart accepts no responsibility for the accuracy of the data contained within or the use of the data by any other party.
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