Stock standard sizes

Stock standard sizes and tolerances for Kanthal® APMT and Kanthal® APM iron-chromium-aluminium (FeCrAl) alloy furnace tubes.

Need to know more?

Call us Email us

● = stock standard
OD
mm (in.)
Wall thickness
mm (in.)

Weight
kg/m (lb/ft)
Kanthal APM

Weight
kg/m (lb/ft)
Kanthal APMT
Max. length
m (ft)
Kanthal APM

Kanthal APMT

26.67 (1.05) 2.87 (0.11) 1.52 (1.02) - 13.0 (42.6) -
33.4 (1.31) 3.38 (0.13) 2.26 (1.52) - 13.0 (42.6) -
33.7 (1.33) 6.0 (0.24) 3.71 (2.49) - 10.5 (34.4) -
40 (1.57) 3.0 (0.12) 2.48 (1.67) - 13.0 (42.6) -
50.8 (2.00) 6.35 (0.25) 6.30 (4.23) - 7.0 (23.0) -
60.33 (2.38) 3.91 (0.15) 4.92 (3.31) - 8.0 (26.2) -
64 (2.52) 4.0 (0.16) 5.35 (3.60) - 7.0 (23.0) -
75 (2.95) 4.5 (0.18) 7.08 (4.76) 7.19 (4.83) 12.0 (39.4)
83 (3.27) 5.0 (0.20) 8.70 (5.85) 8.83 (5.93) 12.0 (39.4)
89 (3.50) 5.5 (0.22) 10.2 (6.85) 10.4 (6.99) 12.0 (39.4)
100 (3.94) 5.0 (0.20) 10.6 (7.12) 10.8 (7.26) 11.5 (37.7)
109 (4.29) 5.0 (0.20) 11.6 (7.79) - 10.0 (32.8) -
115 (4.53) 5.5 (0.22) 13.4 (9.00) 13.6 (9.14) 8.0 (26.2)
128 (5.04) 5.5 (0.22) 15.0 (10.08) - 12.0 (39.4) -
146 (5.75) 6.0 (0.24) 18.7 (12.57) - 9.5 (31.2) -
154 (6.06) 6.0 (0.24) 19.8 (13.30) - 8.0 (26.2) -
164 (6.46) 6.0 (0.24) 21.2 (14.25) - 7.0 (23.0) -
178 (7.01) 8.0 (0.31) 30.3 (20.36) - 6.5 (21.3) -
198 (7.80) 9.0 (0.35) 37.9 (25.47) - 5.0 (16.4) -
260 (10.24) 11.0 (0.45) 61.1 (41.06) - 3.0 (9.8) -

Tolerances

Tubes ≤ OD 50 mm (1.968 in.)
OD ±1.5%, min ±0.75 mm (0.030 in.)
Wall thickness ±15%, min ±0.6 mm (0.024 in.)
Straightness Max. height of arc 3 mm/1000 mm (0.12 in./39.4 in.)
Tubes > OD 50 mm (1.968 in.)
OD ±1
Wall thickness ±15%
Straightness Max. height of arc 3 mm/1000 mm (0.12 in./39.4 in.)