Tiger I armor plate quality

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Miles Krogfus
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Tiger I armor plate quality

Post by Miles Krogfus » 26 May 2015 21:02

Kummersdorf August 27,1942 test of Dortmund Horde Hutten Verein (DHHV) 37HB75 analysis plate for the company's use on the Tiger. Given are the plate thickness (T) equivalent thickness from the projectile's official armor pen. curve (ET) Brinell Hardness of plate (HB) angle of strike (A).
T 60.4 mm ET 64.4 HB 285 A 44.5. T 70.2 ET 71.4 HB 290 A 29.5. T 80.3 ET 80 HB 280 A 0. T 90.2 ET 83.3 HB 270 A 31. T 100.2 ET 96.3 HB 270 and A 6.5. T 110 ET 90.9 HB 270 A 0.
DHHV 37HB75 plate at Aberdeen: Tiger I Lower hull side (LHS) T 63.25 ET 60.8 HB 285 A 55 P M82. Lower hull front (LHF) T 102.6 ET 85 HB 270 A 30 P M82. Driver's plate (DP) T 103.9 ET 109.4 HB 305 A 0 P M72.
DHHV analysis C81 Aberdeen: Upper hull side (UHS) T 81.8 ET 92.5 HB 340 A 30 P M62. Turret side (TS) T 81.3 ET 77.5 HB 330 A 0 P M62. DP T 102.1 ET 89 HB 295 A 0 P M62.
Krupp PP7182 plate Aberdeen: Lower hull side (LHS) T 61.5 ET 57.3 HB 310 A 0 P M72. Second LHS T 62.5 ET 66.8 HB 315 A 45 P M62. UHS T 81.3 ET 89.8 HB 330 A 0 P M72. Same UHS ET 87.8 A 45 P M82. DP T 106.4 ET 107.7 HB 295 A 30 P M82.

Miles Krogfus
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Posts: 379
Joined: 08 May 2015 19:54
Location: San Diego, CA

Re: Tiger I armor plate quality

Post by Miles Krogfus » 28 May 2015 02:17

The peforation figures (ballistic limits) for the ABL Tiger I tests: N Naval, Army limits.
DHHV 37HB75: LHS M82 2491 NI, DP M72 1991 N, LHF M82 2277 NI
DHHV C81 TS M62 1774 NI, UHS M62 2424 Ni, DP 2006 N
Krupp PP7182 LHS #1 M72 1098 A, LHS #2 M62 2409 NI, UHS M72 1536 A, M82 2680 N, DP M82 2395 NI

Miles Krogfus
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Posts: 379
Joined: 08 May 2015 19:54
Location: San Diego, CA

Re: Tiger I armor plate quality

Post by Miles Krogfus » 04 Sep 2019 00:33

Here are the figures for the 1942 DHHV tests of its Tiger plate and those from the Aberdeen tests of 3 Tigers. and pages 2 and 16 from the ABL report. Note that 1 of the 5 original DHHV 37HB75 plates was superior (in green), 2 inferior (in red), 1 of the 3 37HB75 Aberdeen plates and 1 of the 3 newer DHHV C81 plates superior, 1 inferior. Of the 5 Krupp PP718 plates, 3 were superior, 1 inferior.
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Last edited by Miles Krogfus on 04 Sep 2019 08:25, edited 2 times in total.

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Mobius
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Location: Glendale, CA

Re: Tiger I armor plate quality

Post by Mobius » 04 Sep 2019 02:33

The yaw issue calls into question the long range effectiveness of the 76mm M62 shell. Maybe that is why they went to the 1/32 rifling. The windscreen should only absorb about 1mm in penetration.

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