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Anonymous users2024-02-07A193 B7 is a U.S. brand, which is close to the domestic 42CrMoa material.
42CrMOA is an ultra-high-strength steel, with high strength and toughness, good hardenability, no obvious tempering brittleness, high fatigue limit and multiple impact resistance after quenching and tempering treatment, and good low-temperature impact toughness. The steel is suitable for manufacturing large and medium-sized plastic molds that require a certain strength and toughness.
42CRMO, a steel for high-strength bolts, requires high strength, good resistance to low temperature brittleness, and strict grain size. Fine-grained strengthening and improved low-temperature properties of steel are achieved by alloying CR and MO, controlling carbon content and residual elements in the steel, and controlling the second phase in the rolling control steel. The test shows that the actual grain size of the steel is 6 8 grades, all kinds of inclusions are below the grade, AKV reaches 27J (-100), and the mechanical properties fully meet the requirements of users.
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Anonymous users2024-02-06Alloy steel for high temperatures.
Bolt material, A193 is an American standard.
Bolt material standard code, American standard.
ASTMA193B7 alloy steel bolt material for high temperature. It is equivalent to the domestic 42CrMOA material, and B7 is the material grade.
It is equivalent to the domestic 42CRMO or 42CRMOA chromium-molybdenum alloy structural steel, which is suitable for alloy steel and stainless steel bolt materials on pressure vessels, valves, flanges and fittings used at high temperatures.
Suitable for alloy steel and stainless steel bolt materials on pressure vessels, valves, flanges and fittings used at high temperatures.
Extended Materials. a193
B7 (or A193
B7M) Mechanical Properties Standard Grade:
A193B7 corresponding minimum tensile strength.
Be. Minimum yield strength.
Be. The elongation is 16(18).
The maximum hardness is HRC35 (HB235), material: chromium-molybdenum alloy steel, the American grade is selected.
Bolt performance class.
minThere are more than 10 grades such as 9, and the intermediate and above bolts are made of low-carbon alloy steel or medium-carbon steel and are heat-treated (quenched and tempered), commonly known as high-strength bolts.
The rest are commonly known as ordinary bolts.
The bolt performance grade is composed of two numbers, which represent the nominal tensile strength value and yield ratio of the bolt material.
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Anonymous users2024-02-05ASTM A193 B7 belongs to the American standard alloy structural steel for high-temperature bolts, and the executive standard: ASTM A193 A193M-2017
ASTM A193 B7 steel is an ultra-high strength steel, which has high strength and toughness, good hardenability, no obvious tempering brittleness, high fatigue limit and multiple impact resistance after quenching and tempering treatment, and good low-temperature impact toughness. ASTM A193 B7 steel is suitable for the manufacture of large and medium-sized plastic molds and high-strength, high-temperature bolts and nuts that require a certain strength and toughness.
The chemical composition of ASTM A193 B7 is shown in the following figure:
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Anonymous users2024-02-04It belongs to the American standard of stainless steel for high-temperature bolts, and the executive standard: ASTM A193 A193M-2017
It is a general-purpose stainless steel, which is widely used in the production of equipment and parts that require good comprehensive properties (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel.
The chemical composition is shown below:
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Anonymous users2024-02-03What is the material of bolt A193 B8 Bolt A193B8 is made of stainless steel Lingtang. A193 refers to the standard specification for alloy steel and stainless steel bolt materials for high-pressure and high-temperature operation. B8 refers to the hardness, and the chemical composition of B8 is the same as that of 304m.
The bolt performance Woodsan grade label consists of two numbers, which represent the nominal tensile strength value and yield ratio of the bolt material, respectively. Stainless steel bolts are divided into A1-50, A1-70, A1-80, A2-50, A2-70, A2-80, A3-50, A3-70, A3-80, A4-50, A4-70, A4-80, A4-80, A5-50 and the first letter and number represent the stainless steel group, and the second and third numbers represent the tensile strength of 1 10. The performance level of bolts for steel structure connection is divided into .,
More than 10 grades such as 9. Its intermediate and above bolts are made of low-carbon alloy steel or medium-carbon steel, and after heat treatment (quenching, tempering), they are generally called high-strength bolts, and others are generally called ordinary bolts. @2019
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Anonymous users2024-02-02American Standards! astm
Alloy steel bolt material for high temperature.
It is equivalent to the domestic 42CrMOA material.
Equivalent to 35 or 40 steel.
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Anonymous users2024-02-01It is equivalent to the domestic 42CrMOA material.
Equivalent to 40 steel.
a193grb7/a194
Bolts of this combination of GR2H are available in China.
This is the bolt material, our company generally uses the commonly used 35CrMoA 30Crmo generation. This is recognized by the Beijing Design Institute, and this rule is widely used within Sinopec.
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Anonymous users2024-01-31Strictly speaking, A193, B8-2, A194-8 is not a material, but a grade. A193 B8-2 is the American standard.
Bolt grade, high mechanical property requirements, small specifications of tensile strength.
To reach more than 860MPa, the hardness should be below 35HRC. A194 8 is an American standard nut grade.
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Anonymous users2024-01-30It belongs to the American standard stainless steel for high-temperature bolts, and the implementation standard: ASTM A193 A193M-2017
Due to the addition of MO, stainless steel has particularly good corrosion resistance, atmospheric corrosion resistance and high temperature strength, and can be used under harsh conditions; Excellent work hardening (non-magnetic); It has excellent high temperature strength, and is mainly used in seawater equipment, chemicals, dyes, papermaking, oxalic acid, fertilizer and other production equipment; Photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts.
The chemical composition is shown below:
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Anonymous users2024-01-29A194-8 is the performance grade of stainless steel nuts in the United States, which is used for high temperature and high pressure or low temperature and high pressure stainless steel nuts, which is one of the most commonly used stainless steel nuts, and we specialize in producing.
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Anonymous users2024-01-28A- denotes austenitic stainless steel, C- denotes martensitic stainless steel, and F- denotes ferritic stainless steel. The groups are divided into A1 and A5, and the chemical composition of each group is different. For details, please refer to Appendix B in GB.
A2-70" is the performance mark of stainless steel bolts, screws, studs and nuts, "A2" before - indicates the material group, i.e. A2 of the second group of austenitic steel, "70" after "-" indicates the performance level of the product, and its number is a minimum tensile strength of 700Nmm2 (700MPa).
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Anonymous users2024-01-27Bolt A193B8 is not made of rusty steel. A193 refers to the standard specification for alloy steel and stainless steel bolt materials for high-pressure and high-temperature operation. B8 refers to hardness.
The chemical composition of B8 is the same as that of 304m. The bolt performance grade is composed of two Latan part numbers, which represent the nominal tensile strength value and yield ratio of the bolt material. Stainless steel bolts are divided into A1-50, A1-70, A1-80, A2-50, A2-70, A2-80, A3-50, A3-70, A3-80, A4-50, A4-70, A4-80, A5-50, A5-70, A5-80, C1-50, C1-70, C1-110, C4-50, C4-70, C3-80, F1-45, F1-60.
The first letter and number represent the group of stainless steel, and the first number represents the tensile strength of 1 10. Bolt performance rating for steel structure connectionThere are more than 10 grades such as 9, and the intermediate and above bolts are made of low-carbon alloy steel or medium-carbon steel and are heat-treated (quenched and tempered), which are commonly known as high-strength bolts, and the rest are commonly referred to as ordinary bolts.
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