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NEPLATNÁ ASTM A709/A709M-17 1.9.2017 náhľad

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ASTM A709/A709M-17

Standard Specification for Structural Steel for Bridges

NORMA vydaná dňa 1.9.2017

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Informácie o norme:

Označenie normy: ASTM A709/A709M-17
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.9.2017
Kód tovaru: NS-694108
Počet strán: 8
Približná hmotnosť: 24 g (0.05 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

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Anotácia textu normy ASTM A709/A709M-17 :

Keywords:
alloy, atmospheric corrosion resistance, bars, bridges, carbon, fracture-critical, high-strength, low-alloy, non-fracture critical, plates, quenched, shapes, steel, structural steel, tempered,, ICS Number Code 77.140.10 (Heat-treatable steels)

Doplňujúce informácie

1. Scope

1.1 This specification covers carbon and high-strength low-alloy steel structural shapes, plates, and bars, quenched and tempered alloy steel, and stainless steel for structural plates intended for use in bridges. Eight grades are available in four yield strength levels as follows:

Grade U.S. [SI]

Yield Strength, ksi [MPa]

36 [250]

50 [345]

50S [345S]

50 [345]

50W [345W]

50 [345]

HPS 50W [HPS 345W]

50 [345]

50CR [345CR]

50 [345]

HPS 70W [HPS 485W]

70 [485]

HPS 100W [HPS 690W]

100 [690]

1.1.1 Grades 36 [250], 50 [345], 50S [345S], 50W [345W], and 50CR [345CR] are also included in Specifications A36/A36M, A572/A572M, A992/A992M, A588/A588M, and A1010/A1010M (UNS S41003), respectively. When the requirements of Table 10 or Table 11 or the supplementary requirements of this specification are specified, they exceed the requirements of Specifications A36/A36M, A572/A572M, A992/A992M, A588/A588M, and A1010/A1010M (UNS S41003). Product availability is shown in Table 1.

TABLE 1 Tensile and Hardness Requirements^A

Note 1: Where “. . .” appears in this table, there is no requirement.

Grade

Plate Thickness, in. [mm]

Structural Shape Flange or Leg Thickness, in. [mm]

Yield Point or Yield Strength,^B ksi [MPa]

Tensile Strength, ksi [MPa]

Minimum Elongation, %

Reduction of Area^C^,^Dmin, %

Plates and Bars^C^, ^E

Shapes^E

8 in. or 200 mm

2 in. or 50 mm

8 in. or 200 mm

2 in. or 50 mm

36 [250]

to 4 [100], incl

to 3 in. [75 mm], incl

36 [250] min

58–80 [400–550]

...

over 3 in. [75 mm]

36 [250] min

58 [400] min

...

50 [345]

to 4 [100], incl

all

50 [345] min

65 [450] min

21^F

...

50S [345S]

all

50–65
[345–450]^H^,^I

65 [450]^H min

...

50W [345W]
and
HPS 50W
[HPS 345W]

to 4 [100], incl

all

50 [345] min

70 [485] min

21^J

...

50CR [345CR]

to 2 [50], incl

50 [345] min

70 [485] min

...

HPS 70W
[HPS 485 W]

to 4 [100], incl

70 [485] min^B

85–110 [585–760]

...

19^K

...

HPS 100W
[HPS 690W]

to 2¹/₂ [65], incl

100 [690] min^B

110–130 [760–895]

...

18^K

...

over 2¹/₂ to 4
[65 to 100], incl^M

90 [620] min^B

100–130 [690–895]

...

16^K

...

1.1.2 Grades 50W [345W], 50CR [345CR], HPS 50W [HPS 345W], HPS 70W [HPS 485W], and HPS 100W [HPS 690W] have enhanced atmospheric corrosion resistance (see 13.1.2). Product availability is shown in Table 1.

TABLE 2 Grade 36 [250] Chemical Requirements (Heat Analysis)

Note 1: Where “. . .” appears in this table there is no requirement. The heat analysis for manganese shall be determined and reported as described in the Heat Analysis section of Specification A6/A6M.

Product Thickness,
in. [mm]

Shapes^A All

Plates >15 in. [380 mm] Width^B

Bars, Plates ≤15 in. [380 mm] Width^B

To ³/₄ [20], incl

Over ³/₄ to 1¹/₂ [20 to 40], incl

Over 1¹/₂ to 2¹/₂ [40 to 65], incl

Over 2¹/₂ to 4 [65 to 100], incl

To ³/₄ [20], incl

Over ³/₄ to 1¹/₂ [20 to 40], incl

Over 1¹/₂ to 4 [40 to 100], incl

Carbon, max, %

0.26

0.25

0.26

0.27

0.26

0.27

0.28

Manganese, %

...

0.80–1.20

0.85–1.20

...

0.60–0.90

Phosphorus, max, %

0.04

0.030

0.04

Sulfur, max, %

0.05

0.030

0.05

Silicon, %

0.40 max

0.15–0.40

0.40 max

Copper, min, % when copper steel is specified

0.20

TABLE 3 Grade 50 [345] Chemical Requirements^A (Heat Analysis)

Maximum Diameter, Thickness, or Distance Between Parallel Faces,
in. [mm]

Carbon,
max, %

Manganese,^B
max, %

Phosphorus,^C
max, %

Silicon^D

Columbium (Niobium),^E
Vanadium,
and Nitrogen

Plates to 1¹/₂-in. [40-mm] Thick, Shapes with flange or leg thickness to 3 in. [75 mm] inclusive, Sheet Piling, Bars, Zees, and Rolled Tees, max, %

Plates Over 1¹/₂-in. [40-mm] Thick and Shapes with flange thickness over 3 in. [75 mm], %

4 [100]

0.23

1.35

0.030

0.40

0.15–0.40

See Table 4

· Structural shapes

· Bars

· Plates with widths up to and including 15 in. [380 mm]

TABLE 4 Grade 50 [345] Alloy Content

Type^A

Elements

Heat Analysis, %

Columbium (niobium)^B

0.005–0.05^C

Vanadium

0.01–0.15^D

Columbium (niobium)^B

0.005–0.05^C

Vanadium

0.01–0.15^D

Columbium (niobium)^B
plus vanadium

0.02–0.15^E

TABLE 5 Grade 50CR [345CR] Chemical Requirements (Heat Analysis)

Note 1: Where “. . .” appears in this table there is no requirement.

Element

Composition, %

Carbon

0.030 max

Manganese

1.50 max

Phosphorus

0.040 max

Sulfur

0.010 max

Silicon

1.00 max

Nickel

1.50 max

Chromium

10.5 – 12.5

Molybdenum

. . .

Nitrogen

0.030 max

TABLE 6 Grade 50W [345 W] Chemical Requirements (Heat Analysis)

Note 1: Types A and B are equivalent to Specification A588/A588M, Grades A and B, respectively.

Element

Composition, %^A

Type A

Type B

Carbon^B

0.19 max

0.20 max

Manganese^B

0.80–1.25

0.75–1.35

Phosphorus^C

0.030 max

Sulfur^C

0.030 max

Silicon

0.30–0.65

0.15–0.50

Nickel

0.40 max

0.50 max

Chromium

0.40–0.65

0.40–0.70

Copper

0.25–0.40

0.20–0.40

Vanadium

0.02–0.10

0.01–0.10

· Structural shapes

· Bars

· Plates with widths up to and including 15 in. [380 mm]

TABLE 7 Grades HPS 50W [HPS 345W] and HPS 70W [HPS 485 W], and HPS 100W [HPS 690W] Chemical Requirements (Heat Analysis)

Note 1: Where “. . .” appears in this table, there is no requirement.

Element

Composition, %

Grades
HPS 50W
[HPS 345W],
HPS 70W
[HPS 485W]

Grade
HPS 100W
[HPS 690W]

Carbon

0.11 max

0.08 max

Manganese

2.5 in. [65 mm] and under

1.10–1.35

0.95–1.50

Over 2.5 in. [65 mm]

1.10–1.50

0.95–1.50

Phosphorus

0.020 max

0.015 max

Sulfur^A

0.006 max

Silicon

0.30–0.50

0.15–0.35

Copper

0.25–0.40

0.90–1.20

Nickel

0.25–0.40

0.65–0.90

Chromium

0.45–0.70

0.40–0.65

Molybdenum

0.02–0.08

0.40–0.65

Vanadium

0.04–0.08

Columbium (niobium)^B

. . .

0.01–0.03

Aluminum

0.010–0.040

0.020–0.050

Nitrogen

0.015 max

TABLE 8 Grade 50S [345S] Chemical Requirements (Heat Analysis)

Element

Composition, %

Carbon, max

0.23

Manganese

0.50 to 1.60^A

Silicon, max

0.40

Vanadium, max

0.15^B

Columbium (niobium),^C max

0.05^B

Phosphorus, max

0.035

Sulfur, max

0.045

Copper, max

0.60

Nickel, max

0.45

Chromium, max

0.35

Molybdenum, max

0.15

TABLE 9 Relationship Between Impact Testing Temperature Zones and Minimum Service Temperature

Zone

Minimum Service Temperature, °F [°C]

[−18]

below 0 to −30

[−18 to −34]

below −30 to −60

[−34 to −51]

1.2 Grade HPS 70W [HPS 485W] or HPS 100W [HPS 690W] shall not be substituted for Grades 36 [250], 50 [345], 50S [345S], 50W [345W], or HPS 50W [HPS 345W]. Grade 50W [345W], or HPS 50W [HPS 345W] shall not be substituted for Grades 36 [250], 50 [345] or 50S [345S] without agreement between the purchaser and the supplier.

1.3 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.

1.4 For structural products to be used as tension components requiring notch toughness testing, standardized requirements are provided in this standard, and they are based upon American Association of State Highway and Transportation Officials (AASHTO) requirements for both fracture critical and non-fracture critical members.

1.5 Supplementary requirements are available but shall apply only if specified in the purchase order.

1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.7 For structural products produced from coil and furnished without heat treatment or with stress relieving only, the additional requirements, including additional testing requirements and the reporting of additional test results, of Specification A6/A6M apply.

1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

A6/A6M-23	Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
A370-23	Standard Test Methods and Definitions for Mechanical Testing of Steel Products
A572/A572M-21e1	Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel (Includes all amendments and changes 6/16/2021).
A36/A36M-19	Standard Specification for Carbon Structural Steel
A673/A673M-17	Standard Specification for Sampling Procedure for Impact Testing of Structural Steel
A992/A992M-22	Standard Specification for Structural Steel Shapes
G101-04(2020)	Standard Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels
A588/A588M-19	Standard Specification for High-Strength Low-Alloy Structural Steel, up to 50 ksi [345 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance

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