A387 F5 / Grade 5 Coil / Sheet

A387 F5 / Grade 5 Coil / Sheet

产品详情

A 167 S33228 : A 167 (1999) 化学成分

C	Mn	Si	P	S	Cr	Ni	Ce	Nb	Al
0.04 - 0.08	≤ 1.00	≤ 0.30	≤ 0.02	≤ 0.015	26.0 - 28.0	31.0 - 33.0	0.05 - 0.10	0.10 - 1.00	≤ 0.025

A 167 S33228 : A 167 (1999) 力学性能

A387 F5 / Grade 5 Coil / Sheet

A sufficient amount of Charpy V-notch test specimens shall be taken from the same location from a plate from
each heat of steel to construct two transition temperature
curves.
S63.1.2 The test specimens for one transition temperature
curve shall be given the minimum post weld heat treatment
(PWHT) cycle specified by the purchaser.
S63.2 The test specimens for the other transition temperature curve shall be given the PWHT cycle specified in S63.1.2
plus the following step cooling heat treatment:
Hold at 1100°F (593°C) for 1 h, then cool at 10°F (5.6°C)/h
to 1000°F (538°C).
Hold at 1000°F (538°C) for 15 h, then cool at 10°F (5.6°C)/h
to 975°F (524°C).
Hold at 975°F (524°C) for 24 h, then cool at 10°F (5.6°C)/h
to 925°F (496°C).
Hold at 925°F (496°C) for 60 h, then cool at 5°F (2.8°C)/h
to 875°F (468°C).
Hold at 875°F (468°C) for 100 h, then cool at 50°F
(27.8°C)/h to 600°F (315°C).
Cool in still air.
S63.3 Test the Charpy V-notch test specimens in accordance
with Test Methods and Definitions A 370 to determine the 40
ft-lbs (55 J) transition temperature from each transition temperature curve using a set of three test specimens at each test
temperature. The test temperatures shall include tests on the
upper and lower shelves and a minimum of four intermediate
temperatures.
S63.4 The following requirements shall be met.
vTr40 12.5DvTr40 # 50°F
vTr55 12.5DvTr55 # 10°C
where:
vTr40 (vTr55) = the 40 ft-lbs (55 J) transition temperature of the material subjected to the
minimum PWHT specified by the pu

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