Stock sizes in music wire and stainless steel
Associated Spring offers a broad variety of SPEC Metric Compression
Springs which are dimensionally manufactured to the European Din 2095,
Grade 2 Specification. These metric springs are the same reliable designs
which have been sold for years in Europe and Asia by Associated Spring.
Larger and smaller Din sizes are available upon request.
Material
Music Wire - Per ASTM-A228 or AMS 5112. Music wire springs are not
recommended for applications where the temperature exceeds 121 deg. C
(250 deg F.)
Stainless Steel Type 302 - ASTM-A313 or AMS 5688 spring tempered (chemical & physical
only). Stainless steel springs are not recommened for applications where
the temperature exceeds 260 deg. C (500 deg. F).
Type 302 stainless steel is slightly magnetic. Surface of stainless
steel may have a residue of nickel on the surface. This is normal and
will not affect the function of the part.
Wire diameter is prior to forming .
Direction of Helix
Right hand.
Ends
Wire diameter 0.8 mm and under are squared and unground. Wire diameter
1.0 mm and over are squared and ground.
Free length L is for reference use only. Load P is attained at length
L 1 .
To determine load P at any length other than L 1 , multiply the proposed
deflection by the rate R. *[P = (L-Lx) x R].
Finishes
Standard finish is that of the normal wire. Music wire is oiled. Shot-peened
and plated finishes furnished on request. Allow sufficient additional
time for special finishes.
Tolerances
Outside diameter and wire diameter are tolerances so that springs will
operate in a hole or over a shaft as specified in the table. The outside
diameter tolerances within the same outside diameter range vary based
on the index § of the spring. Load and rate tolerances vary with
changes in active coils and geometry. For actual tolerances please refer
to Din 2095, grade 2 specifications.
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