AFNOR standards for steel materials
Abstract
This comprehensive guide presents the AFNOR (Association Française de Normalisation) standard specifications for steel materials across three major categories: structural and constructional steels, tool steels, and specialty steels including stainless, heat-resisting, and valve steels. The standards cover specifications for various steel products, from carbon and alloy steels to specialized applications in boilers, pressure vessels, and railway components. Each standard provides detailed information on chemical composition, mechanical properties, and specific application requirements.
Introduction
The AFNOR Standards Review for steel comprises three volumes containing formally approved classifications, guides, practices, specifications, test methods, and terminology. These standards serve as essential reference materials for industry professionals and manufacturers.
Standard Classification System
Documentation Format
Each standard entry includes:
- Standard number and year
- Grade designation
- Chemical composition
- Mechanical properties (yield point, tensile strength, notch toughness)
- Additional relevant data (manufacturing method, thickness specifications, heat treatment requirements)
Covers:
Structural and Constructional Steel Standards
Table 1: Complete list of AFNOR standards for structural and constructional steels
| Standard Number | Description |
| AFNOR A 33-101 (82) | Carbon steels |
| AFNOR A 35-551 (84) | Cementation steels |
| AFNOR A 35-556 (84) | Locking bolts |
| AFNOR A 35-557 (83) | High performance bolts |
| AFNOR A 35-558 (83) | Bolts for eleveted temperatures |
| AFNOR A 35-561 (92) | Free cutting steels |
| AFNOR A 35-562 (86) | Free cutting steels for drawing |
| AFNOR A 35-564 (83) | Steels for cold forming |
| AFNOR A 35-565 (94) | Ball and roller bearing steels |
| AFNOR A 35-566 (83) | Chain steels |
| AFNOR A 35-567 (84) | Cementation steels |
| AFNOR A 35-571 (84) | Spring steels (hot formed) |
| AFNOR A 36-102 (93) | Hot rolled strip |
| AFNOR A 36-204 (92) | Plates |
| AFNOR A 36-208 (82) | Plate for boilers and pressure vessels |
| AFNOR A 36-210 (83) | Plate for boilers and pressure vessels |
| AFNOR A 36-211 (90) | Steel plate for welded gas cylinders |
| AFNOR A 36-212 (85) | Plates for offshore structures |
| AFNOR A 36-231 (92) | Hot-rolled plates for cold forming |
| AFNOR A 36-232 (92) | Cold-rolled plates for cold forming |
| AFNOR A 36-301 (92) | Sheet for cold forming |
| AFNOR A 36-602 (88) | Forging for boilers and pressure vessels |
| AFNOR A 36-612 (82) | General purpose forgings |
| AFNOR A 37-502 (84) | Cold-rolled strip |
| AFNOR A 35-501 (94) (EN 10025) | Non alloy steels |
| AFNOR A 36-205/206) (92) (EN 10028-2) | Flat products for pressure purpose (elevated temperatures) |
| AFNOR A 36-207 (92) (EN 10028-3) | Flat products for pressure purpose (weldable fine grain steels, normalized) |
| AFNOR A 35-552 (91) (EN 10083-1) | Heat-treatable steels |
| AFNOR A 35-553 (91) (EN 10083-2) | Heat-treatable steels |
| AFNOR A 35 554 (91) (EN 10083-3) | Heat-treatable steels |
| AFNOR A 36-201 (93) (EN 10113-2) | Welded fine grained steels |
| AFNOR EN 10113-3 (93) | Weldable fine grained steels |
| AFNOR EN 10130 (91) | Cold rolled flat products for cold forming |
| AFNOR A 35-502 (93) (EN 10155) | Steels with improved atmospheric resistance |
Tool Steel Standards
Table 2: AFNOR standards for tool steels
| Standard Number |
| AFNOR NF A 35-590 (1992) |
| AFNOR NF A 35-596 (87) |
Specialty Steel Standards
Table 3: Standards for stainless, heat-resisting, and valve steels
| Standard Number | Description |
| AFNOR A 35-559 (93) | Heat-treatable special steels and stainless steels for externally threaded fasteners for use at low temperature |
| AFNOR A 35-573 (90) | Plates, wide strips and strips |
| AFNOR A 35-574 (90) | Semi finished products, bars and wire rod |
| AFNOR A 35-577 (90) | Wire rods for cold forming |
| AFNOR A 35-578 (82) | For application at high temperatures |
| AFNOR A 35-579 (91) | Steels for exhaust valves |
| AFNOR A 35-583 (90) | Wire rods for filler materials |
| AFNOR A 35-595 (92) | Steels for cutlery |
| AFNOR A 36-209 (90) | Plates for boilers and pressure vessels |
| AFNOR A 36-607 (84) | Forgings for boilers and pressure vessels |
| AFNOR A 54-301 (73) | Iron-nickel alloys |
| AFNOR A 54-401 (73) | Ni-Mo and Ni-Mo-Cr alloys |
European Harmonization
Several standards align with European Norms (EN), including:
- AFNOR A 35-501 (EN 10025) for non-alloy steels
- AFNOR A 36-205/206 (EN 10028-2) for pressure vessel applications
- AFNOR A 35-552/553/554 (EN 10083) for heat-treatable steels
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