ASTM F2546-07(2012)
(Test Method)Standard Test Method for Snowboard Step-in Bindings
Standard Test Method for Snowboard Step-in Bindings
SIGNIFICANCE AND USE
This test method describes the steps required to evaluate a step-in snowboard binding system function. The test method consists of a series of laboratory tests that evaluate resistance to static and dynamic loading, function under cold and icy conditions, impact and fatigue behavior and assessment of potential false positive release. All tests must be passed.
All possible strains on the boot can be attributed to one torque M and one force F each on every axis X, Y, Z of a system of coordinates (see Fig. 1). The point of origin of the coordinates is agreed to be in the center of the ankle joint which is located approximately 100 mm from the plantar surface and 80 mm from the back of the heel.
The torques and forces illustrated in the drawing in Fig. 1 are positive. The corresponding parameters acting in opposite direction are given negative signs. The arrowheads indicate the sense of rotation of the snowboard boot movement.
FIG. 1 Torques and Forces
DimensionLengthTest L11000 mmStatic Bending L1300 mmImpact and Fatigue L2100 mmAll Tests L380 mmAll Tests L4Min = L5 × 0.85Optional Shortened Foot
Acceptable for All Tests L5L5Full Length Foot
Acceptable for All TestsFIG. 2 Schematic Drawing of Artificial Leg for Binding Tests
SCOPE
1.1 This test method specifies the essential requirements for a snowboard step-in bindingboot system (see 3.1.2); hereafter referred to as step-in snowboard bindings.
1.2 This test method is applicable to step-in snowboard bindings for adults and children. This type of binding system utilizes a mechanical interlocking mechanism, and the interlock mechanism of the system will be specific to the particular manufacturer. Compatibility between different systems is not expected or anticipated thus each potential combination of boot and binding requires testing.
1.3 For snowboard boots interfacing with ski binding, see ISO 11634.
1.4 For snowboard plate bindings, see ISO 14790.
1.5 For snowboard strap bindings made for soft boots, see ISO 14573.
1.6 For snowboard step-in bindings, see ISO 15344.
1.7 This standard does not address how or under what circumstances a snowboard binding with programmable release modes should release in its intended modes nor does it address the safety, desirability, or efficacy of any programmable release mode for snowboard bindings; any testing of such bindings to this standard must be performed with the release modes disabled or adjusted to their highest release value.
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
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Designation:F2546 −07 (Reapproved 2012)
Standard Test Method for
Snowboard Step-in Bindings
This standard is issued under the fixed designation F2546; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 This test method specifies the essential requirements for 2.1 ASTM Standards:
a snowboard step-in binding—boot system (see 3.1.2); hereaf- F1107 Terminology Relating to Snowboarding
ter referred to as step-in snowboard bindings. 2.2 ISO Standards:
ISO 554:1976 Standard Atmospheres for Conditioning
1.2 This test method is applicable to step-in snowboard
and/or Testing—Specifications
bindings for adults and children. This type of binding system
ISO6004 AlpineSkis—SkiBindingScrews—Requirements
utilizes a mechanical interlocking mechanism, and the inter-
ISO 10958-1 Snowboards—Binding Mounting Area—Part
lock mechanism of the system will be specific to the particular
1: Requirements and Test Methods for Snowboards with-
manufacturer. Compatibility between different systems is not
out Inserts
expectedoranticipatedthuseachpotentialcombinationofboot
ISO 10958-2 Snowboards—Binding Mounting Area—Part
and binding requires testing.
2: Requirements and Test Methods for Snowboards with
1.3 For snowboard boots interfacing with ski binding, see
Inserts
ISO 11634.
ISO 11634 Snowboard Boots—Interface with Ski Binding
1.4 For snowboard plate bindings, see ISO 14790. ISO 14573 Snowboard Strap Bindings for Soft Boots
ISO 14790 Snowboard Plate Bindings
1.5 For snowboard strap bindings made for soft boots, see
ISO 15344 Snowboard Step-in Bindings—Requirements
ISO 14573.
and Test Methods
1.6 For snowboard step-in bindings, see ISO 15344.
3. Terminology
1.7 This standard does not address how or under what
3.1 Definitions:
circumstances a snowboard binding with programmable re-
3.1.1 snowboard plate binding for hard boots—aconnecting
lease modes should release in its intended modes nor does it
system between a hard boot and a snowboard that is accom-
address the safety, desirability, or efficacy of any program-
plished by means of a plate binding system. For reference
mable release mode for snowboard bindings; any testing of
only—not covered by this test method.
such bindings to this standard must be performed with the
release modes disabled or adjusted to their highest release
3.1.2 snowboard step-in binding—boot system—an inter-
value.
locking system that connects a snowboard boot and a snow-
board that utilizes a step-in interface.
1.8 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1.3 snowboard step-in binding type A—binding suitable
responsibility of the user of this standard to establish appro-
for riders over 45 kg body mass (adults).
priate safety and health practices and determine the applica-
3.1.4 snowboard step-in binding type C—binding suitable
bility of regulatory limitations prior to use.
exclusively for a body mass up to 45 kg (children).
1 2
This test method is under the jurisdiction of ASTM Committee F27 on Snow For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Skiing and is the direct responsibility of Subcommittee F27.30 on Skiing and contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Snowboarding Equipment. Standards volume information, refer to the standard’s Document Summary page on
CurrenteditionapprovedJune1,2012.PublishedJuly2012.Originallyapproved the ASTM website.
in 2006. Last previous edition approved in 2007 as F2546 – 07. DOI: 10.1520/ Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
F2546-07R12. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2546−07 (2012)
3.1.5 snowboard strap binding for soft boots—a connecting
system between a soft boot and a snowboard that is accom-
plished by means of compression straps or other similar
devices. For reference only—not covered by this test method.
3.2 Refer to Terminology F1107 for terminology specific to
snowboarding.
4. Testing Parameters
4.1 This test method describes the steps required to evaluate
a step-in snowboard binding system function. The test method
consists of a series of laboratory tests that evaluate resistance
to static and dynamic loading, function under cold and icy
conditions, impact and fatigue behavior and assessment of
potential false positive release. All tests must be passed.
4.2 All possible strains on the boot can be attributed to one
torqueMandoneforceFeachoneveryaxisX,Y,Zofasystem
of coordinates (see Fig. 1). The point of origin of the
coordinates is agreed to be in the center of the ankle joint
which is located approximately 100 mm from the plantar
surface and 80 mm from the back of the heel.
4.3 The torques and forces illustrated in the drawing in Fig.
1arepositive.Thecorrespondingparametersactinginopposite
direction are given negative signs.The arrowheads indicate the
sense of rotation of the snowboard boot movement.
5. Apparatus
Dimension Length Test
5.1 One artificial leg with fixed ankle joint of 80° without L 1000 mm Static Bending
L 300 mm Impact and Fatigue
toe section (see Fig. 2). Test size appropriate to the mid range
L 100 mm All Tests
of the sizing for the boot-binding system being tested.
L 80 mm All Tests
L Min=L × 0.85 Optional Shortened Foot
4 5
5.2 Arigid plate (for example, steel plate of at least 10–mm
Acceptable for All Tests
thickness) with the appropriate mounting hole pattern for
L L Full Length Foot
5 5
Acceptable for All Tests
mounting the binding capable of supporting the applied loads
and moments.
FIG. 2Schematic Drawing of Artificial Leg for Binding Tests
TABLE 1 Static Bending Loads—Direction and Torque
Direction Type A Type C
± M 150 N·m 80 N·m
x
± M 300 N·m 180 N·m
y
± M 150 N·m 100 N·m
z
5.3 Test device capable of applying the described forces and
moments. The test device shall be designed to allow applica-
tion of a torque (see Table 1) with a force applied at the upper
partofa1000–mmshaftconnectedtotheartificialleg(seeFig.
2).
5.4 Fatigue test device for cyclic loading at the prescribed
rates.
5.5 Impact test device capable of delivering a minimum of
120 J of energy at impact speeds up to 6 m/s.
6. Sampling and Conditioning
6.1 Threesamplepairsofsnowboardbootsandbindingsare
to be used for lab testing. Use one new sample for each
FIG. 1Torques and Forces potentially destructive test method.
F2546−07 (2012)
6.2 Unless otherwise noted, all tests shall be performed at 8.3 Snow Pack—The snowboard binding shall latch with a
room temperature (see ISO 554:1976). All sample boots and minimum of 2 mm of snow pack between the boot sole and the
bindingsshallbepreconditionedat–20°Cforaminimumof90 binding.
min prior to testing. Unless otherwise noted, each test shall
start within 2 min from when samples were removed from the
9. Testing Procedures
cold. Surface temperature measurements should be made to
9.1 The series of tests shown in 9.2 – 9.6 are to be used to
ensure that sufficient conditioning time had been achieved.
evaluate the step-in boot-binding system function.
9.2 False Positive Lock and Clearance—Place a minimum
7. Loading Rates
2–mm (60.1–mm) thick shim of polyethylene, roughly the
7.1 Perform the test quasi-statically, ensuring that the fol-
same shape as the outsole under the boot and verify that the
lowing indicative values of the torque gradient are respected:
step-in function still works in accordance with the manufac-
7.1.1 Torsion Values:
turer’s instructions. Insert the boot into the binding and
perform the static bending tests described in
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