Understanding ASTM D2000 Specifications
1. Standards
2. Year Last Revised
3. Units of Measure
4. Grade
5. Type and Class
6. Hardness
7. Tensile Strength
8. Additional Requirement Suffixes
To gain a better understanding of ASTM D2000 specifications, let us take the following example:
ASTM D2000 03 M2 BG 717 B14 EO14 EO34 F17
When it comes to potable drinking water (DW), the most important thing is to keep the water clean, safe, and pollutant-free. For the DW industry, our elastomer products comply with the following standards:
1) Standards
When it comes to specifying elastomer products, the standard will be ASTM D2000.
2) Year Last Revised
It is a two-digit code that specifies the year in which the standard was last revised. The value is 03 in our example.
3) Units of Measure
It is the units of measure that are used to report the results of the test. This will be denoted by including the letter M, which is included in our example.
4) Grade
The grade highlights the level of test requirements needed for the elastomer. A grade of value 1 specifies that only basic requirements are needed. Grades of 2-9 indicate necessary additional test requirements. The value is 2 in our example.
5) Type and Class
ThASTM D2000 classifies rubber materials types based on temperature resistance. The specification also indicates that the elastomers must meet specific requirements post 70 hours, and 100DC of heat aging at different temperatures.
Change in Hardness: ±15 points
Change in Tensile Strength: ±30%
Change in Elongation: -50%
Class is generally used to differentiate elastomer materials, based on their resistance when immersed in IRM 903 Oil for 70 hours.
Listed below are the type/class assigned to some common materials:
In the case of our example, the type/class is BG.
6) Hardness
The hardness of the elastomer is indicated by the durometer range specified in Shore A units, followed by ± 5 durometer. To get the actual value of the elastomer, the call-out value is multiplied by 10.
In the case of our example, the hardness is indicated by – 70 ± 5 durometer.
7) Tensile Strength
Tensile strength is measured in psi for English units and MPa for metric units. The minimum tensile strength is 17 MPa in our example.
8) Additional Requirement Suffixes
The rest of the ASTM D2000 specification is suffix requirements. They are preferred when the basic requirement for a specific type and class of a rubber material is not enough to achieve the required properties in the finished product.
As shown in the following table, the first letter of the suffix indicates the required test.
Suffix | Required Test |
A | Heat Resistance |
B | Compression Set |
C | Ozone or Weather Resistance |
D | Compression-Deflection Resistance |
EA | Water Resistance |
EF | Fuel Resistance |
EO | Oil and Lubricant Resistance |
F | Low-Temperature Resistance |
G | Tear Resistance |
H | Flex Resistance |
J | Abrasion Resistance |
K | Adhesion |
M | Flammability Resistance |
N | Impact Resistance |
P | Staining Resistance |
R | Resilience |
Note that for each suffix, the first letter(s) are always followed by numbers. The first number indicates the test method that needs to be used and the test duration. The second number specifies the testing temperature.
In the case of our example, the letter ‘B’ of the first suffix specifies the requirement of compression set, and the ‘14’ specifies the test methods.
Understanding ASTM D2000 Specifications
1. Standards
2. Year Last Revised
3. Units of Measure
4. Grade
5. Type and Class
6. Hardness
7. Tensile Strength
8. Additional Requirement Suffixes
To gain a better understanding of ASTM D2000 specifications, let us take the following example:
ASTM D2000 03 M2 BG 717 B14 EO14 EO34 F17
When it comes to potable drinking water (DW), the most important thing is to keep the water clean, safe, and pollutant-free. For the DW industry, our elastomer products comply with the following standards:
1) Standards
When it comes to specifying elastomer products, the standard will be ASTM D2000.
2) Year Last Revised
It is a two-digit code that specifies the year in which the standard was last revised. The value is 03 in our example.
3) Units of Measure
It is the units of measure that are used to report the results of the test. This will be denoted by including the letter M, which is included in our example.
4) Grade
The grade highlights the level of test requirements needed for the elastomer. A grade of value 1 specifies that only basic requirements are needed. Grades of 2-9 indicate necessary additional test requirements. The value is 2 in our example.
5) Type and Class
ThASTM D2000 classifies rubber materials types based on temperature resistance. The specification also indicates that the elastomers must meet specific requirements post 70 hours, and 100DC of heat aging at different temperatures.
Change in Hardness: ±15 points
Change in Tensile Strength: ±30%
Change in Elongation: -50%
Class is generally used to differentiate elastomer materials, based on their resistance when immersed in IRM 903 Oil for 70 hours.
Listed below are the type/class assigned to some common materials:
In the case of our example, the type/class is BG.
6) Hardness
The hardness of the elastomer is indicated by the durometer range specified in Shore A units, followed by ± 5 durometer. To get the actual value of the elastomer, the call-out value is multiplied by 10.
In the case of our example, the hardness is indicated by – 70 ± 5 durometer.
7) Tensile Strength
Tensile strength is measured in psi for English units and MPa for metric units. The minimum tensile strength is 17 MPa in our example.
8) Additional Requirement Suffixes
The rest of the ASTM D2000 specification is suffix requirements. They are preferred when the basic requirement for a specific type and class of a rubber material is not enough to achieve the required properties in the finished product.
As shown in the following table, the first letter of the suffix indicates the required test.
Suffix | Required Test |
A | Heat Resistance |
B | Compression Set |
C | Ozone or Weather Resistance |
D | Compression-Deflection Resistance |
EA | Water Resistance |
EF | Fuel Resistance |
EO | Oil and Lubricant Resistance |
F | Low-Temperature Resistance |
G | Tear Resistance |
H | Flex Resistance |
J | Abrasion Resistance |
K | Adhesion |
M | Flammability Resistance |
N | Impact Resistance |
P | Staining Resistance |
R | Resilience |
Note that for each suffix, the first letter(s) are always followed by numbers. The first number indicates the test method that needs to be used and the test duration. The second number specifies the testing temperature.
In the case of our example, the letter ‘B’ of the first suffix specifies the requirement of compression set, and the ‘14’ specifies the test methods.