Skip to main content
Find a Lawyer

Code of Federal Regulations Title 49. Transportation 49 CFR Pt. 178, App. A—SPECIFICATIONS FOR STEEL

Current as of January 02, 2025 | Updated by Findlaw Staff

TABLE 1

[Open-hearth, basic oxygen, or electric steel of uniform quality.
The following chemical composition limits are based on ladle analysis:]

Chemical composition, percent-ladle analysis

Designation

Grade 11

Grade 212

Grade 3245

Carbon․․․․․․․․․․․․․․․․․․․․․․

0.10/0.20․․․․․․․․․․․․․․

0.24 maximum․․․․․․․․․․․

0.22 maximum.

Manganese․․․․․․․․․․․․․․․․․․․

1.10/1.60․․․․․․․․․․․․․․

0.50/1.00․․․․․․․․․․․․․․

1.25 maximum.

Phosphorus, maximum․․․․․․․․․

0.04․․․․․․․․․․․․․․․․․․․

0.04․․․․․․․․․․․․․․․․․․․

0.045.6

Sulfur, maximum․․․․․․․․․․․․․

0.05․․․․․․․․․․․․․․․․․․․

0.05․․․․․․․․․․․․․․․․․․․

0.05.

Silicon․․․․․․․․․․․․․․․․․․․․․

0.15/0.30․․․․․․․․․․․․․․

0.30 maximum

Copper, maximum․․․․․․․․․․․․․

0.40․․․․․․․․․․․․․․․․․․․

․․․․․․․․․․․․․․․․․․․․․․․

Columbium․․․․․․․․․․․․․․․․․․․

․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․

0.01/0.04

Heat treatment authorized․․․

(3)․․․․․․․․․․․․․․․

(3)․․․․․․․․․․․․․․․

(3).

Maximum stress (p.s.i.)․․․․․

35,000․․․․․․․․․․․․․․․․․

35,000․․․․․․․․․․․․․․․․․

35,000.

1 Addition of other elements to obtain alloying effect is not authorized.

2 Ferritic grain size 6 or finer according to ASTM E 112–96 (IBR, see § 171.7 of this subchapter).

3 Any suitable heat treatment in excess of 1,100° F., except that liquid quenching is not permitted.

4 Other alloying elements may be added and shall be reported.

5 For compositions with a maximum carbon content of 0.15 percent of ladle analysis, the maximum limit for manganese on ladle analysis may be 1.40 percent.

6 Rephosphorized Grade 3 steels containing no more than 0.15 percent phosphorus are permitted if carbon content does not exceed 0.15 percent and manganese does not exceed 1 percent.

CHECK ANALYSIS TOLERANCES

[A heat of steel made under any of the above grades, the ladle
analysis of which is slightly out of the specified range is
acceptable if the check analysis is within the following variations:]

Tolerance (percent) over
the maximum limit or
under the minimum limit

Element

Limit or maximum specified (percent)

Under minimum limit

Over maximum limit

Carbon․․․․․․․․․․․․․․․․․․․․․․․․․․

To 0.15 inclusive․․․․․․․․․․․․․․․․․․․․․․

0.02

0.03

Over 0.15 to 0.40 inclusive․․․․․․․․․․․․

0.03

0.04

Manganese․․․․․․․․․․․․․․․․․․․․․․․

To 0.60 inclusive․․․․․․․․․․․․․․․․․․․․․․

0.03

0.03

Over 0.60 to 1.15 inclusive․․․․․․․․․․․․

0.04

0.04

Over 1.15 to 2.50 inclusive․․․․․․․․․․․․

0.05

0.05

Phosphorus7․․․․․․․․․․․․․․․․

All ranges․․․․․․․․․․․․․․․․․․․․․․․․․․․․․

․․․․․․․․․․․․․

0.01

Sulfur․․․․․․․․․․․․․․․․․․․․․․․․․․

All ranges․․․․․․․․․․․․․․․․․․․․․․․․․․․․․

․․․․․․․․․․․․․

0.01

Silicon․․․․․․․․․․․․․․․․․․․․․․․․․

To 0.30 inclusive․․․․․․․․․․․․․․․․․․․․․․

0.02

0.03

Over 0.30 to 1.00 inclusive․․․․․․․․․․․․

0.05

0.05

Copper․․․․․․․․․․․․․․․․․․․․․․․․․․

To 1.00 inclusive․․․․․․․․․․․․․․․․․․․․․․

0.03

0.03

Over 1.00 to 2.00 inclusive․․․․․․․․․․․․

0.05

0.05

Nickel․․․․․․․․․․․․․․․․․․․․․․․․․․

To 1.00 inclusive․․․․․․․․․․․․․․․․․․․․․․

0.03

0.03

Over 1.00 to 2.00 inclusive․․․․․․․․․․․․

0.05

0.05

Chromium․․․․․․․․․․․․․․․․․․․․․․․․

To 0.90 inclusive․․․․․․․․․․․․․․․․․․․․․․

0.03

0.03

Over 0.90 to 2.10 inclusive․․․․․․․․․․․․

0.05

0.05

Molybdenum․․․․․․․․․․․․․․․․․․․․․․

To 0.20 inclusive․․․․․․․․․․․․․․․․․․․․․․

0.01

0.01

Over 0.20 to 0.40 inclusive․․․․․․․․․․․․

0.02

0.02

Zirconium․․․․․․․․․․․․․․․․․․․․․․․

All ranges․․․․․․․․․․․․․․․․․․․․․․․․․․․․․

0.01

0.05

Columbium․․․․․․․․․․․․․․․․․․․․․․․

To 0.04 inclusive․․․․․․․․․․․․․․․․․․․․․․

0.005

0.01

Aluminum․․․․․․․․․․․․․․․․․․․․․․․․

Over 0.10 to 0.20 inclusive․․․․․․․․․․․․

0.04

0.04

Over 0.20 to 0.30 inclusive․․․․․․․․․․․․

0.05

0.05

7 Rephosphorized steels not subject to check analysis for phosphorus.

Previous Part of Code Next Part of Code
Back to Chapter List

Cite this article: FindLaw.com - Code of Federal Regulations Title 49. Transportation 49 CFR Pt. 178, App. A—SPECIFICATIONS FOR STEEL - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-49-transportation/cfr-pt-49-178-app-a/

FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature before relying on it for your legal needs.

Was this helpful?

Welcome to FindLaw's Cases & Codes

A free source of state and federal court opinions, state laws, and the United States Code. For more information about the legal concepts addressed by these cases and statutes, visit FindLaw’s Learn About the Law.

Go to Learn About the Law

Latest Blog Posts

For Legal Professionals

Learn About The Law

Get help with your legal needs

FindLaw’s Learn About the Law features thousands of informational articles to help you understand your options. And if you’re ready to hire an attorney, find one in your area who can help.

Go to Learn About the Law

Need to Find an Attorney?

Search our directory by legal issue

Enter information in one or both fields (Required)

Copied to clipboard