BS 5S 100:1993:2003 Edition
$198.66
Procedure for inspection, testing and acceptance of wrought steels (other than plate, sheet, strip and tube)
| Published By | Publication Date | Number of Pages |
| BSI | 2003 | 66 |
Specifies the requirements for steel billets, bars, rods and forgings, of parts made from such forms and subsequently heat treated, and of spring steel rods for wire drawing, spring wire and springs, for aerospace purposes.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD AEROSPACE SERIES |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 7 | Section 1 General requirements 1.1 Scope 1.2 General 1.3 References 1.4 Terms and definitions 1.4.1 air melting 1.4.2 bar 1.4.3 bright bar 1.4.4 bright drawn bar 1.4.5 black bar |
| 8 | 1.4.6 batch 1.4.7 billet 1.4.8 cast 1.4.9 consumable electrode 1.4.10 consumable electrode remelting 1.4.11 vacuum arc remelting 1.4.12 electroflux remelting 1.4.13 electroslag remelting 1.4.14 continuous casting 1.4.15 design authority 1.4.16 equivalent diameter 1.4.17 forgemaster |
| 9 | 1.4.18 forging 1.4.19 forging stock 1.4.20 ingot 1.4.21 limiting ruling section 1.4.22 manufacturer 1.4.23 parent cast 1.4.24 procedure X 1.4.25 purchaser1. 1.4.26 quality assurance authority 1.4.27 rod 1.4.28 ruling section 1.4.29 strand |
| 10 | 1.4.30 secondary refining 1.4.31 supplier 1.4.32 test piece 1.4.33 test sample 1.4.34 tests 1.4.34.1 acceptance tests 1.4.34.2 proving tests 1.4.35 vacuum degassing 1.4.36 vacuum induction melting 1.4.37 wire .15 Information to be supplied by the purchaser |
| 12 | 1.6 Chemical composition 1.6.1 The chemical composition of the steel shall comform to the material specification. The values spe… 1.6.2 Each consumable electrode remelted cast shall be analyzed. Samples shall be taken from the top an… 1.6.3 Analytical samples shall be selected and prepared in accordance with the relevant requirements gi… 1.6.4 Elements not quoted in the material specification shall not be intentionally added to the steel e… Table 1 Maximum limits on residual elements 1.6.5 The deliberate addition of lead shall be permitted in certain low strength steels if it is specif… 1.6.6 Product analysis and permitted deviations |
| 13 | Table 2 Permitted variations of product analysis from specified range |
| 14 | 1.7 Manufacture 1.7.1 The steel shall be made by the melting process specified in the material specification. If, in ad… 1.7.2 Except as permitted in |
| 15 | 1.7.3 For vacuum arc remelted casts produced under automated conditions with equipment enabling quantit… 1.7.4 For electroslag remelted casts, the use of electrode stub ends of different material to the steel… 1.7.5 The size, shape and method of production of the ingots shall be so selected as to minimize segreg… 1.7.6 The ingots, unless charged hot into the mill or forge reheating furnace, shall be cooled in a man… 1.7.7 Reheating for hot working and cooling after hot working shall be controlled to avoid deleterious … 1.7.8 At some stage, or stages, in the manufacture of the product, adequate discard shall be removed fr… 1.7.9 For products made by continuous casting, the minimum hot working reduction ratio from as cast blo… 1.7.10 All products shall be manufactured from material conforming to all the relevant requirements of t… Temporary identification up to the cast approval stage Ingots from each cast shall be identified serially and wrought products shall be identifiable to … Continuously cast products shall be identified serially and shall be identifiable to the strand f… |
| 16 | Surface dressing Overall dressing Local dressing Surface inspection The surfaces of bars and forgings shall be inspected for defects which might be detrimental to th… Forgings and black bar for machining shall be descaled by a suitable method to enable the surface… The presence of any surface defect which is likely to be detrimental to the end use shall be a ca… Bar supplied for the manufacture of aerospace fasteners shall be such that when processed in acco… Freedom from defects All material shall be free from any defect which is likely to be detrimental to the end use. Certain defects (e.g. “fish tailing”) can occur at the ends of bars due to rolling. Appropriate s… Sulfur printing and deep etching tests Sulfur printing and/or deep etching tests shall be carried out, at a suitable stage during manufa… |
| 17 | Samples shall be selected as specified in the material specification, or order or [see� Sampling of ingots of up to�5�000�kg�mass for sulfur printing�and�deep�etching tests Lead segregation Cleanness Ultrasonic examination All materials, except continuously cast material which is manufactured directly into coil, shall … In the case of continuously cast steel which is manufactured directly into coil, an alternative m… For bar exceeding 200�mm in diameter or minor sectional dimension and for all products in austeni… If the form and/or surface condition of billet or bar supplied for subsequent hot working does no… |
| 18 | If the higher grade acceptance standard given in Heat treatment Material and parts shall be supplied in the heat treatment condition specified in the material sp… No material, part or test sample shall be subjected to refining, hardening, normalizing, softenin… Temperature control during heat treatment shall be in accordance with BS�2M�54:1991, except in th… If a specific temperature (value and tolerance) is given in the material specification, drawing o… Mechanical properties The minimum frequency of sampling for mechanical testing shall be one sample per batch. The values for mechanical properties specified in the material specification shall be applied in … Selection and preparation of test samples Test samples shall be selected and prepared in accordance with the relevant section of this stand… If transverse properties for billet or bar are specified in the material specification or order [… Except for precipitation hardening steels (see� It shall be permissible for test samples for precipitation hardening steels for which the specifi… |
| 19 | Location of longitudinal test pieces for mechanical tests For products and test samples up to and including 30�mm in diameter or minor sectional dimension,… For products and test samples over 30�mm in diameter or minor sectional dimension the longitudina… Location of transverse test pieces for mechanical tests Tensile test at room temperature For products exceeding 16�mm in diameter or major sectional dimension the test piece shall be pre… In the case of bar, section and wire not exceeding 16�mm in diameter or major sectional dimension… Testing shall be carried out as specified in the relevant section of this standard. If not specif… Location of transverse test pieces |
| 20 | If a value for the proof stress is given in the material specification, on at least one test piec… The fracture faces shall be free from defects. The values obtained shall conform to the material specification and the results of each test shal… Tensile test at elevated temperature The test piece shall be prepared from the test sample (see The test piece shall be tested in accordance with BS�4A�4-1.2:1967. If a value for the proof stress is given in the material specification, the proof stress shall be… The fracture faces shall be free from defects. The values obtained shall conform to the material specification and the results of each test shal… Creep and rupture test The test piece shall be prepared from the test sample (see The test piece shall be tested in accordance with BS�4A�4-1.3:1967. The stress applied shall be equal to or greater than that specified in the material specification… The duration of the test shall be not less than the minimum specified in the material specification. The fracture faces shall be free from defects. The values obtained shall conform to the material specification and the results of each test shal… Impact test The test piece(s) shall be prepared from the test sample (see The test shall be carried out on a minimum of three notches. When the Izod test is specified, the… In the case of impact test pieces from actual forgings, the test samples shall be taken from the … If the test sample is machined to test piece size prior to heat treatment (see The test piece(s) shall be tested in accordance with BS�4A�4-2:1966. |
| 21 | The fracture faces shall be free from defects. The values obtained shall conform to the material specification and the results of each test shal… Hardness test Hardness testing shall be carried out in accordance with one of the following methods as specifie… Tests on the individual items comprising a batch, and where applicable, on the test sample(s) rep… The hardness values obtained shall conform to the material specification. The frequency of testing shall be as given in the relevant section of this standard. Special tests Grain size test Hardenability (Jominy) test Retesting procedures General Mechanical testing Other tests |
| 22 | Condition of supply Dimensional tolerances Maintenance of identity The material shall be identifiable with respect to cast and heat treatment batch and, if specifie… With the exception of forgings, ingots and parts, each piece of steel shall be checked immediatel… Test samples shall be identifiable with the material that they represent. Final marking Products shall bear the following identification marking: Each bar over 25�mm in diameter or major sectional dimension and each billet shall be stamped on … Bar not exceeding 25�mm in diameter or major sectional dimension, rod and wire for springs, and b… Each forging of 5�kg or over shall be stamped with the information required by Forgings of less than 5�kg either shall be individually marked as required by Each parcel of springs from the same batch shall have attached a durable label indelibly marked w… |
| 23 | Where the material specification gives material designations, these shall be used, as appropriate… Certification The manufacturer shall supply with each delivery a certificate of conformity, bearing the name an… When certification of the material is issued by a supplier, who is not the manufacturer, the supp… If a batch of material consigned by the manufacturer is sub-divided, or the material cut to size,… Except for cutting to size, material consigned by a supplier who is not the manufacturer shall be… |
| 25 | Bar for machining delivered in other than the final heat treated condition (for parts to be heat … General Selection and preparation of mechanical test samples Steel other than carburizing, nitriding and precipitation hardening steels Carburizing steels Nitriding steels |
| 26 | Precipitation hardening steels Mechanical tests Initial tests Retests Hardness test Initial tests Retests |
| 27 | Bar and rod for machining delivered in the final heat treated condition including austenitic corr… General Selection and preparation of mechanical test samples Normalized, hardened and tempered, and precipitation hardening steels, and austenitic corrosion r… Nitriding steels Mechanical tests Initial tests Retests |
| 28 | Hardness test Initial tests Retests |
| 29 | Carbon steel bar and rod for machining, not subject to hardening and tempering General Selection and preparation of mechanical test samples Bar Maximum mass of a batch. Bar Rod Maximum mass of a batch. Coil Preparation Mechanical tests Initial tests |
| 30 | Retests |
| 31 | Forging stock and billet and bar for subsequent hot working General Selection and preparation of mechanical test samples Steels other than carburizing, nitriding and precipitation hardening steels Carburizing steels Nitriding steels Precipitation hardening steels |
| 32 | Mechanical tests Initial tests Retests Hardness test Initial tests Retests Surface inspection of forging stock |
| 33 | Forgings General Manufacture Forgings shall be made from material conforming to Section� For forgings made by the steelmaker for delivery in the finally heat treated condition, all the t… For forgings made by the steelmaker for delivery in other than the finally heat treated condition… If a process control procedure (see The record of the method of manufacture or the production schedule shall include details of the f… Procedure X for initial approval and process control testing If specified on the drawing or order [see If specified on the drawing or order, sample forgings shall be periodically cut up for evaluation… Where procedure X is invoked the following information to be supplied by the purchaser shall be f… Except as provided in All test results obtained under procedure X shall be reported to the design authority. |
| 34 | Selection and preparation of mechanical test samples for batch release testing General Test samples for acceptance tests for forgings supplied fully heat treated Test samples for proving tests for forgings supplied for heat treatment after machining (other th… Test samples for proving tests for forgings supplied for heat treatment after machining made from… Supply of test samples for subsequent heat treatment |
| 35 | Mechanical tests Initial tests Retests Hardness test Initial tests |
| 36 | Retests |
| 37 | Parts finally heat treated after machining General Parts for normalizing, hardening and tempering, or softening Manufacture Heat treatment Selection and preparation of mechanical test samples Mechanical tests Hardness test |
| 38 | Parts for carburizing Manufacture Heat treatment Depth of case Selection and preparation of mechanical test samples |
| 39 | Mechanical tests Hardness test Parts for nitriding Manufacture Nitriding treatment Depth of case |
| 40 | Impact test Hardness tests Parts for precipitation hardening Manufacture Heat treatment Selection and preparation of mechanical test samples Mechanical tests |
| 41 | Hardness tests |
| 43 | Unallotted |
| 45 | Bar and rod for the manufacture of forged bolts and forged nuts only General Manufacture Hardening test Selection and preparation of test samples Hardness testing Tensile and hardness tests Selection of test samples Preparation of test samples Initial tests |
| 46 | Retests Freedom from carburization and decarburization Selection of test samples Preparation of test samples Initial tests Maximum depth of partial decarburization |
| 47 | Freedom from surface defects Selection of test samples Initial tests Reverse torsion test Retests |
| 48 | Non-destructive testing Ferromagnetic steel Non-magnetic steel |
| 49 | Spring steel rod and wire for springs General Rod for wire drawing Manufacture Surface defects. Visual examination Surface defects. Deep etching test Microscopic examination for decarburization |
| 50 | Tensile test Wire for the manufacture of springs Manufacture Surface defects. Visual examination Specific examinations for defects Microscopic examination |
| 51 | Non-destructive testing Deep etching test Mechanical tests Retests |
| 52 | Protection against corrosion Springs manufactured from wire |
| 53 | Deleted |
| 55 | (normative) Cleanness examination procedure (normative) Cleanness examination procedure Principle Use of macro-cleanness and micro-cleanness methods Macro-cleanness assessment by the magnetic particle method Assessment stage Test frequency |
| 56 | Preparation of test specimens Test method Acceptance criteria |
| 57 | Acceptance criteria for macro-cleanness of air melted steels assessed using the magnetic particle… Micro-cleanness assessment by the microscopic method Assessment stage Sampling frequency and preparation of test specimens Test method Acceptance criteria |
| 58 | Release certification Frequency of sampling ingots for micro-cleaness assessment |
| 59 | Micro-cleanness acceptance criteria for steels |
| 60 | (normative) Ultrasonic examination procedure (normative) Ultrasonic examination procedure Introduction Personnel Equipment Reference standards Testing Frequency of testing Acceptance criteria for ultrasonic testing Acceptance criteria Records |
| 61 | (normative) Inspection and testing requirements for springs (normative) Inspection and testing requirements for springs Manufacture Surface defects. Visual examination Heat treatment Sampling for tensile and decarburization tests Tensile test Initial tests Retests Microscopic examination for decarburization Initial tests Retests |
| 62 | (normative) Rules for application of values for chemical composition and mechanical properties gi… (normative) Rules for application of values for chemical composition and mechanical properties gi… In material specifications, the limits of chemical composition and of mechanical properties are e… In deciding whether the values obtained by acceptance analysis or tests fall within the specified… |
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