，介绍世界钢号对照表，尤其是弹簧钢的
Steel numbers are unique to categorize and identify a steel grade or type. Numbering among steels is managed by the following organizations:
International Organization of Standardization (ISO)
American Iron and Steel Institute (AISI)
The Society of Automotive Engineers (SAE)
UNS (Unified Numbering System)
Below we cover the steel number descriptions and tables of the various steel numbering systems.
International Organization of Standardization (ISO)
The ISO standard 10437-1 is an international standards system for designations of steels. The classification system covers steels for unalloyed (carbon) steel, stainless and heat-resistant steels. The designations are assigned according to common product properties, which include chemical composition, mechanical properties and application.
American Iron and Steel Institute (AISI)
The American Iron and Steel Institute (AISI) is an organization which tags steels with a four-digit numerical system.
The first two digits indicate that the steel is an alloy steel. The last two digits indicate the approximate percentage of carbon contained in the steel.
The Society of Automotive Engineers (SAE)
The Society of Automotive Engineers (SAE) is an organization which tags steels with a four digit numerical system. The first number represents the type of steel, while the last three digits typically represent the percentage of carbon contained in the steel.
UNS (Unified Numbering System)
The Unified Numbering System (UNS) is a four digit numerical system or the standard reference system for various metals and alloys.
UNS numbers are exact rather than approximate and are good for all steel grades, while SAE and AISI, only cover steels associated with the US and North America.
Spring steels
Spring steels are a special variety of steel which are designed to be elastic; that is, to be able to flex and return to their original shape.
The most common steels used for springs belong to the medium and high carbon family, from 1050 to 1095. These steels are hardened and tempered to be able to resist severe loads and pressures.
Carbon spring steel is a suitable material for such application because of its resilience, and because of its availability in various grades having a wide range of mechanical property and hardness.
The most common grades of spring steels are:
1050 Carbon Spring Steel
1060 Carbon Spring Steel
1070 Carbon Spring Steel
1075 Carbon Spring Steel
1080 Carbon Spring Steel
1085 Carbon Spring Steel
1090 Carbon Spring Steel
1095 Carbon Spring Steel
1050 spring steel is a medium carbon spring steel that is generally used in the annealed condition. This steel is known for its good ductility and toughness.
1060 spring steel is used in high stress and impact applications or even in those demanding high wear resistance.
1070 spring steel is able to resist very heavy loads, and it is a common material for flat springs and helical springs.
1075 spring steel is a high carbon alloy that offers excellent wear resistance, strength, and resilience. It has very good fatigue properties, as well as good heat resistance and toughness.
1080 spring steel works well in tempering applications due to good machinability and iswear resistance
1085 spring steel is known to be one of the most wear resistant steels available. It is also known to be one of the most resilient and remarkable steel.
1090 spring steel has excellent strength, wear resistance, and toughness that makes it suitable for high-pressure applications.
1095 spring steel offers excellent resilience and wear resistance, making it well suited for cryogenic applications, medical instrumentation, and compression springs.
In conclusion, steel numbers are a significant part of identifying different types and grades of steel. Different organizations maintain separate steel numbering systems that identify the same type of steel, which helps to increase the traceability and accountability of steel materials. Carbon spring steels are a special variety of steel which are designed for high strength, elasticity and toughness. The most common grades of spring steels are 1050, 1060, 1070, 1075, 1080, 1085, 1090 and 1095.
