String tensions chart

SELECTED CELLO STRING TENSIONS 1922 – 2016

* NB Most manufacturers publish string tensions for A-440Hz tuning and a vibrating string length of 700mm. However, Pirastro’s published data is based on a 690mm string length. We would like to thank Professor Jim Woodhouse of Cambridge University’s Engineering Department for confirming that 3% is the correction to apply to make Pirastro’s data comparable to other manufacturers. We have stated the adjusted figure in brackets after Pirastro’s published data.

String name and date String Medium tension (lb) Windings Core materials
Pirastro Eudoxa 1922 G 27.3 (28.1)* Silver Natural gut
C 26.8 (27.6)*
Thomastik-Infeld Spirocore 1949 G 30.8 Tungsten ¤ Steel rope
C 29.7
Jargar 1956 A 37.4 Alloys Solid steel filament
D 31.7
Thomastik-Infeld Dominant 1970 A 30.8 Chrome Multi-strand nylon
D 24.9
G 22.9
C 22.5
Larsen Strings Standard 1991 A 39.3 SF/ Iron alloy Solid steel
D 29.7 Al/Iron alloy
G 27.6 Tungsten
C 30.1
Larsen Strings Soloist 1993 A 40.7 SF/Iron alloy Solid steel
D 29.7 Al/Iron alloy
G 32.2 Tungsten
D’Addario Helicore 1994 G 29.4 T & S Steel rope
C 28.8
Pirastro Permanent 1996 A 37.1 (38.2)* Chrome steel Solid steel
D 31.4 (32.3)*
G 30.1 (31.0)* Tungsten Steel rope
C 29.4 (30.3)*
Pirastro Permanent Soloist 1996/7 A 36.7 (37.8)* Chrome steel Solid steel
D 31.0 (31.9)*
G 29.2 (30.1)* Tungsten Steel rope
C 28.1 (28.9)*
Pirastro Obligato 2000 A 36.9 (38.0)* Chrome steel Solid steel
D 29.9 (30.8)* SF
G 30.8 (31.7)* Tungsten SF
C 28.1 (28.9)* SF
Pirastro Evah Pirazzi 2004 A 38.9 (40.1)* Chrome steel Solid steel
D 30.8 (31.7)*
G 27.7 (28.5)* Tungsten Steel rope
C 28.1 (28.9)*
Pirastro Evah Pirazzi Soloist 2005 A 38.9 (40.1)* Chrome steel Solid steel
D 28.6 (29.5)*
G 28.1 (28.9)* Tungsten Steel rope
C 29.2 (30.1)*
D’Addario Kaplan Solutions 2005/2009 A 39 Titanium Solid steel
D 31 Nickel
G 30.9 Tungsten Stranded stl
C 30
Pirastro Passione 2008/2009 A 39.1 (40.3)* Chrome steel Solid steel
D 29.2 (30.1)*
G 26.8 (27.6)* Natural gut
C 27.7 (28.5)* Tungsten
Warchal Brilliant 2010 A 35.77 H/SS Advanced Synthetic
D 29.41 H/S
G 30.12 T/S
C 29.29
Jargar Special A unavailable Chrome alloy Solid steel
D
Jargar Superior              A & D  2011-12                     G & C  2016 A 40.8 Chrome alloy Solid steel
D 32.4
G 31.1 T & C alloy Rope core
C 31.9
Larsen Magnacore 2013 A&D; 2014 G&C A 40.4 Tungsten Stranded steel
D 31.6
G 30.8
C 30.2
Warchal Prototype A 2012 A 38.91 SS Alloy SS Alloy
Pirastro Evah Pirazzi Gold  2014 A 40.1 (41.3)* Chrome steel Steel
D 30.4 (31.3)*
G 30.6 (31.5)* Tungsten Rope core
C 29.9 (30.8)*
Thomastik Versum 2015 A 38.8 Multialloy Steel
D 31.5
G 31.5 T & C Spiral
C 30.2
Pirastro Perpetual Medium 2016 A 39.6 (40.8)* Chrome steel Steel
D 30.4 (31.3)*
G 30.8 (31.7)* Tungsten Rope core
C 29.7 (30.6)*
Pirastro Perpetual Soloist 2016 G 30.6 (31.5)* Tungsten Rope core
C 29.5 (30.38)*
Larsen Magnacore Arioso 2016 G 30.4 Tungsten Stranded steel
C 28.2
Warchal Amber 2016 A 37.43 SS Metal helix
A 36.37 H/SS Advanced Synthetic
D 30.28 H/S
G 30.66 T/S
C 30.24 T/SS/S
Thomastik Versum Solo 2017 A 40.1 Multialloy Steel
D 31.5


Al = Aluminium; H = Hydronalium; SS = Stainless Steel; Stl = Steel

C = Chrome; S = Silver; T =Tungsten; SF = Synthetic Fibre;