Testing of mechanical properties

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Testing of metal resistance properties
Testing of rubber and plastic resistance properties
- Rubber products
- Plastic products
Seam strength tests. Seam slippage tests
Hardness testing of metals, metal alloys and sinters
Elastomers and polymer materials’ hardness
Product coating hardness
Impact resilience of plastics and metals
- Plastic impact resilience
- Metal impact resilience
Elastomer fragility testing

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Physicochemical, aesthetic, and functional properties
Pressure tests, leak tests of products

Testing of metal resistance properties

BOSMAL conducts the following resistance testing of metals:

Stretching tests according to PN-EN ISO 6892-1, method A and B
- Resistance, Rm
- Plasticity limit, Re
- Contractual plasticity limit, Rp
- Lengthening, A
- Necking, Z
Sintered products’ resistance to crushing using the squeezing method
- according to PN-EN ISO 2739
Connecting element stretching tests
- PN-EN ISO 898-1, apart from 9.13
- PN-EN ISO 898-5, apart from 9.4
- PN-EN 28839
- PN-EN ISO 6157-2
- PN-EN ISO 898-2
- PN-EN ISO 2320
Propensity to plastic deformation
- Flattening method according to PN-EN ISO 8492
- Drift expanding method according to PN-EN ISO 8493

Equipment

Tensile testing machine

Testing of rubber and plastic resistance properties

Rubber products

Stretching resistance

Stretching resistance (up to 5 kN)

Equipment

Tensile tester machine
Measuring head up to 500 N
Measuring head up to 30 kN
Extensometer

Testing norms

PN-EN ISO 37/AC1

Permanent deformation after squeezing

Permanent deformation after squeezing in the temperature range from -40ºC to 250ºC.

Equipment

Tensile testing machine
Measuring head up to 500 N
Measuring head up to 30 kN

Testing norms

ISO 815-1
ISO 815-2

Tearing resistance

Equipment

Tensile testing machine
Measuring head up to 500 N
Measuring head up to 30 kN

Testing norms

PN-EN ISO 34-1

Hysteresis under compressive strain conditions

Equipment

Tensile testing machine
Measuring head up to 500 N
Measuring head up to 30 kN

Testing norms

PN-C-04289

Plastic products

Static stretching resistance (up to 30 kN)

Measurement of static tensile strength (stretching resistance) and elongation at the yield point (or at the break point) can be carried out over a wide temperature range, namely: -100ºC to 350ºC.

Equipment

Tensile testing machine
Measuring head up to 500 N
Measuring head up to 30 kN
Extensometer

Testing norms

PN-EN ISO 527-2

Elasticity modulus during crushing (up to 30 kN)

Elastic modulus measurement during crushing

Equipment

Tensile testing machine
Measuring head up to 500 N
Measuring head up to 30 kN

Testing norms

PN-EN ISO 178

Static crushing resistance (up to 30 kN)

Static crushing resistance measurement

Equipment

Tensile testing machine
Measuring head up to 500 N
Measuring head up to 30 kN

Testing norms

PN-EN ISO 178

Seam strength tests. Seam slippage tests

The test consists of determining the resistance of the fabric to opening/slipping of the yarns along the seam line under load. BOSMAL is accredited by VW to carry out the test in accordance with PV 3955 and the tests are carried out on an tensile testing machine.

Hardness testing of metals, metal alloys and sinters

Test parameter	Test Norm	Method
Metal and metal alloys hardness	PN-EN ISO 6506-1	Brinell method ball 1, 2.5, 5 and 10 mm; load 1-3000 kg
	PN-EN ISO 6508-1	Rockwell method HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK, HR15N
	PN-EN ISO 6508-1	Knoop method HK1
	PN-EN ISO 6507-1	Vickers method HV0.3 – HV100
Microhardness	PN-EN ISO 6507-1	Vickers method HV0.05 – HV0.2
Metal and other nonorganic coatings’ hardness	PN-EN ISO 4516	Vickers and Knoop method
Resistance welding – Vickers hardness testing) of resistance spot, projection, and seam welds (low-force and microhardness	PN-EN ISO 14271	Vickers method HV0.05 – HV5
Sintered carbides’ hardness	PN-EN 23878	Vickers and Rockwell method
Sintered products’ apparent hardness (excluding sintered carbides)	PN-EN ISO 4498	Brinell, Vickers and Rockwell method
Sintered ferrous materials’ cured coating thickness, carburized or carbonitrided	PN-EN ISO 4507	Vickers hardness distribution method
Contractual surface tempered coating thickness	PN-ISO 3754	Vickers hardness distribution method
Contractual carburized and tempered coating thickness	PN-EN ISO 2639	Vickers hardness distribution method

Equipment

Brinella hardness meter
Micro hardness meter
Rockwell HRC hardness meter
Universal hardness meter

Elastomers and polymer materials’ hardness

Determination / verification of elastomer hardness on standard samples (or products) in the delivery stage, as well as following specified ageing tests

We conduct hardness measurements using the following methods:

Sh A – measurement on standard samples of thickness great than 4 mm,
Sh AM (micro method) – measurement on 2 mm thick samples cut out from the product,
Sh D – measurement on standard samples of thickness great than 4 mm,
IRHD-M (micro method) – measurement on 2 mm thick samples cut out from the product,
Rockwell (hardness scales HRE, HRL, HRM, HRR) – measurement on 4mm thick samples cut out from the product.

Equipment

Hardness tester with interchangeable measuring heads in the range: Sh A, Sh AM, IRHD-M
Hardness tester
Rockwell’s hardness tester

Testing norms

PN-EN ISO 868
ISO 48
ISO 7619-1
ASTM D2240
PN-EN ISO 2039-1
PN-EN ISO 2039-2

Product coating hardness

Determination of coating hardness using the pencil test method. Coating hardness tests can also be conducted following a designated ageing or corrosion test.

Testing norms (examples)

ISO 15184

The impact resilience of plastics and metals

Resilience is a measurement of a material’s fragility, determined by the work needed to dynamically break the sample, compared against a vertical sample profile.

Plastic impact resilience

The Charpy test method

This method involves resilient bending of a cuboid sample with or without a notch, supported by two props and determination of work needed to break it. The notch is used to concentrate strains at a particular point on the sample under test. Resilience determines the work needed to dynamically break a sample, compared to 1 m² of vertical sample profile (in the case of resilience with a notch, then against the profile at the notch’s location).

Testing norms

PN-EN ISO 179-1

The Izod test method

The Izod method differs from the Charpy method in terms of the means of sample mounting, measurements performed and the speed of hammer pendulum impact. The method tests only samples with notches. The sample is mounted vertically, with one end in the hammer base mount and is broken with a cylindrical bladed pendulum at a specified distance from the edge of the mount.

Testing norms

PN-EN ISO 180

Metal impact resilience

Metal resilience using the Charpy method

Breaking work: KV2 and KU2 are determined according to PN-EN ISO 148-1 using pendulum hammer 450MP2B10153 with the following starting energies of hammer impact: 150 J, 300 J and 450 J. Additionally, we possess an RP 890C heating-cooling thermostat allowing tests at temperatures ranging from -90°C to 200°C to be conducted.

Testing norms

PN-EN ISO 148-1

Elastomer fragility testing

Determination / checking of elastomers’ fragility temperature at low temperatures (down to -70°C). The test consists of freezing samples at a specified temperature for a specified time and then hitting them with a hammer with a specified force (test conditions according to material specification).

Equipment

Fragility test apparatus

Testing norms

ISO 812
Customer norms

PN-EN ISO 6892-1 – Metallic materials – Tensile testing – Part 1: Method of test at room temperature
PN-EN ISO 2739 – Sintered metal bushings – Determination of radial crushing strength
PN-EN ISO 898-1 – Mechanical properties of fasteners made of carbon steel and alloy steel – Part 1: Bolts, screws and studs with specified property classes – Coarse thread and fine pitch thread
PN-EN ISO 898-5 – Mechanical properties of fasteners made of carbon steel and alloy steel – Part 5: Set screws and similar threaded fasteners with specified hardness classes – Coarse thread and fine pitch thread
PN-EN ISO 898-2 – Mechanical properties of fasteners made of carbon steel and alloy steel – Part 2: Nuts with specified property classes – Coarse thread and fine pitch thread
PN-EN 28839 – Mechanical properties of fasteners; nonferrous metal bolts, screws, studs and nuts
PN-EN ISO 6157-2 – Fasteners – Surface discontinuities – Part 2: Nuts
PN-EN ISO 2320 – Fasteners – Prevailing torque steel nuts – Functional properties
PN-EN ISO 8492 – Metallic materials – Tube – Flattening test
PN-EN ISO 8493 – Metallic materials – Tube – Drift-expanding test
PN-EN ISO 37/AC1 – Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain properties
PN-EN ISO 34-1 – Rubber, vulcanized or thermoplastic – Determination of tear strength – Part 1: Trouser, angle and crescent test pieces
ISO 815-1 – Rubber, vulcanized or thermoplastic – Determination of compression set – Part 1: At ambient or elevated temperatures
ISO 815-2 – Rubber, vulcanized or thermoplastic – Determination of compression set – Part 2: At low temperatures
PN-C-04289 – Rubber – Determination of relative damping under compressive stress conditions
PN-EN ISO 527-2 – Plastics – Determination of tensile properties – Part 2: Test conditions for moulding and extrusion plastics
PN-EN ISO 178/A1 – Plastics – Determination of flexural properties
PV 3955 – Determining the Seam Slippage Resistance of Trim Cover Material – Woven Fabrics
PN-EN ISO 6506-1 – Metallic materials – Brinell hardness test – Part 1: Test method
PN-EN ISO 6508-1 – Metallic materials – Rockwell hardness test – Part 1: Test method
PN-EN ISO 6507-1 – Metallic materials – Vickers hardness test – Part 1: Test method
PN-EN ISO 4516 – Metallic and other inorganic coatings – Vickers and Knoop microhardness tests
PN-EN ISO 14271 – Resistance welding. Vickers hardness testing (low-force and microhardness) of resistance spot, projection, and seam welds
PN-EN 23878 – Hardmetals. Vickers hardness test
PN-EN ISO 4507 – Sintered metallic materials with the exception of sintered carbides – Samples for tensile testing
PN-ISO 3754 – Steel – Determination of effective depth of hardening after flame or induction hardening
PN-EN ISO 2639 – Steels. Determination and verification of the depth of carburized and hardened cases
PN-EN ISO 868 – Plastics and ebonite – Determination of indentation hardness by means of a durometer (Shore hardness)
ISO 48-4 – Rubber, vulcanized or thermoplastic — Determination of hardness. Part 4: Indentation hardness by durometer method (Shore hardness)
ISO 7619-1 – Rubber, vulcanized or thermoplastic – Determination of indentation hardness – Part 1: Durometer method (Shore hardness)
ASTM D2240 – Standard Test Method for Rubber Property – Durometer Hardness
PN-EN ISO 2039-1 – Plastics – Determination of hardness – Part 1: Ball indentation method
PN-EN ISO 2039-2 – Plastics – Determination of hardness – Part 2: Rockwell hardness
ISO 15184 – Paints and varnishes – Determination of film hardness by pencil test
PN-EN ISO 179-1 – Determination of Charpy impact properties – Part 1: Non-instrumented impact test
PN-EN ISO 180 – Plastics – Determination of Izod impact strength
PN-EN ISO 148-1 – Metallic materials – Charpy pendulum impact test – Part 1: Test method
ISO 812 – Rubber, vulcanized or thermoplastic – Determination of low-temperature brittleness

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