Grade B7 is a heat-treated chromium-molybdenum alloy steel with minimum tensile requirement of 100 ksi, yield of 75 ksi and maximum hardness of 35 HRC. ASTM A193 specification covers requirements for chemical composition, mechanical properties, hardness, heat-treatment, recommended nuts-washers for Grade B7 fasteners.

这是美标，A193 Gr B7螺栓化学成分和机械性能要符合A193 Gr B7标准要求，A194 Gr 2H螺母化学成分和机械性能要符合A194 Gr 2H螺母标准要求。 紧固件咨询顾问俞文龙认为，A194 Gr 2H螺母材质可以用45#钢做，A193 Gr B7螺栓材质就买B7材料，B7材料国内能买到。

A193 Grade B7 is the most commonly used Bolt specification coupled with A194 Grade 2H Nuts for Bolting Carbon Steel pipeline. A193 B7 bolting is available in metric sizes from M6 to M180 and imperial sizes from 1/4 to 7 inches, in diameter. Find information on ASTM A193 Grade B7 chemical composition, mechanical properties such as tensile ...

Grade B7. ASTM A193 Grade B7 bolts and threaded studs are manufactured from a chromium-molybdenum steel and are quenched and tempered (heat treated) to develop the desired mechanical properties (strength). Grade B7 is the most common grade of A193 bolts used in construction. B7 threaded studs and short, headed bolts are readily available in the ...

astm a193 b7属于美标高温螺栓用合金结构钢，执行标准：astm a193/a193m-2017. astm a193 b7钢材属于超高强度钢，具有高强度和韧性，淬透性也较好，无明显的回火脆性，调质处理后有较高的疲劳极限和抗多次冲击能力，低温冲击韧性良好。

b7栓接材料应进行液体淬火加回火处理。 除非另有规定，B7螺栓材料可通过电炉、感应或电阻炉进行热处理。 ⓒ 推荐应用示例：在高低温工况下承受冲击、拉伸和扭转、剪切等应力，规格在M24~M48的高强度螺栓、双头螺栓，性能等级12.9，应用温度范围-100°C~+500°C

astma193,gr b7 ,与国内的42crmo的材料比较接近，但是b7中的mo、mn元素比国标的42crmo略微高一些。现在国内有专门的材料，各种化学成分完全符合astma193,gr b7要求。我们公司也可以生产完全符合astma193,gr b7要求的螺栓螺柱。

ASTM A193 grade b7 stud bolts are heavily utilized in petroleum and chemical construction applications. This specification defines both SI (Metric) and inch-pound units. Grade B7 is a heat-treated chromium-molybdenum (Cr-Mo) alloy steel with minimum tensile strength requirement of 125 ksi, yield 105 ksi, and maximum hardness of 35 HRC.

2024年11月28日 · Gr.B7螺栓因其良好的机械性能和耐腐蚀性，成为石化、能源、建筑等行业不可或缺的关键部件。 ASME SA193M Gr.B7螺栓的性能：高强度：Gr.B7螺栓的最低拉伸强度为860 MPa和最低屈服强度为725 MPa，确保其在高负载条件下不易发生断裂。

SA-193 Grade B7: 对应标准: ASME SA-193/SA-193M-2019 高温或高压用和其他特殊用途的合金钢和不锈钢螺栓 Standard Specification for Alloys-Steel and Stainless Steel Bolting for High-Temperature or or High Pressure Service and Other Special Purpose Applications: 归类: 合金钢: 标签: 铁素体钢 高强度螺栓用钢 ...