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Technical Data

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Technical Data

Mechanical Specification
Diameter / Diamensional Tolerance

Round Bar

Diameter (mm.)	Tolerance
	General Standard	Jis Standard
	General Standard	Class7	Class8	Class9
over 0.8 – 3.0	+0	+0	+0	+0
over 0.8 – 3.0	+0.02	-0.01	-0.014	-0.025
over 3.0 – 6.0	+0	+0	+0	+0
over 3.0 – 6.0	+0.03	-0.12	-0.018	-0.03
over 6.0 – 10.0	+0	+0	+0	+0
over 6.0 – 10.0	+0.04	-0.15	-0.022	-0.036
over 10.0 – 25.4	+0	+0	+0	+0
over 10.0 – 25.4	+0.04	-0.021	-0.027	-0.043

Length Tolerance

Length	Tolerance
1	+ / – 6.6
2	+ / – 13.3
3	+ / – 20.0
4	+ / – 26.6
5	+ / – 33.3
6	+ / – 40.0

Tensile Strength / HV

Grade	Tensile Strength (kgf/mm2)	Vickers Hardness :HV
303 , 304 , 316 , series 3	60 – 100	170 – 300
420 , 410 , series 4	50 – 100	150 – 300

Straightness

Length,L	Deflection,D
Every 1000 mm. for length	0.10 mm.
Every 300 mm. for length	0.05 mm.