ASTM A193 Grade B7 / ASTM A320 Grade L7
Document title ASTM A193 Grade B7 is a low alloy chromium Optional subheading
molybdenum (CrMo) steel supplied in the fully hardened, tempered and stress relieved condition. Our stock is dual certified to ASTM A320 Grade L7, with Charpy impact tests taken at –101°C (27J min). It is typically used in the petrochemical industry for the manufacture manufactur e of bolts, fasteners, studs and studbolts.
Scope
Steel Manufacture
Delivery Condition
ASTM A193 Grade B7 is a bolting specification for medium-high temperature service. It is a heat treated chromimum molybdenum steel and is considered suitable for applications up to 450°C (840°F). L7 has the same chemical & physical properties as B7, with additional Charpy V Notch (CVN) tests taken at -101°C (-150°F) for low temperature service.
Steel is manufactured via Elec tric Arc Furnace, continuously cast, followed by heat treatment and bright conversion.
Applicable bar diameters: 10mm – 4’’ including Metric and Imperial thread rolling diameters. Surface conditions: Drawn or Turned (size dependent). *4’’ dia is currently only available as B7.
Chemical Analysis C
Mn
0.37
0.65
0.49
1.10
P
S
0.035
0.04
Si
Cr
Mo
0.15
0.80
0.15
0.35
1.10
0.25
Mechanical Properties ≤ 2 ½’’ diamete diameterr
≤ 2 ½’’ diamete diameterr
> 2 ½’’ to ≤ 4’’ diamete diameterr
ASTM A193 Grade B7
ASTM A320 Grade L7
ASTM A193 Grade B7
UTS, ksi (Mpa)
125
125 (860)
115 (795)
0.2% Proof Stress, ksi (Mpa)
105
105 (725)
95 (655)
% Elongation (min)
16
16
16
% Reduction of Area (min)
50
50
50
Hardness HBW (max)
321
321
321
Minimum Tem Tempering pering Temp Temperature erature,, °C (°F)
593 (1100)
593 (1100)
593 (1100)
CVN @ -101°C (150°F) (Joules)
N/A
27
N/A Can be ordered‘tested as per L7 requirements’ up to 3.75” dia
Extensive Product Range
Accreditations
Nationwide Next-Day Delivery
Our Metal Centres provide customers with a quick and convenient way of buying smaller quantities of a wide range of steel products. Ideal for jobs where fast completion is needed. They stock a wide choice of black and bright, carbon and alloy grades. Our range includes round, flat and hexagonal bars in a multitude of sizes.
Tata Steel maintains more than 100 market and customer approvals from the worlds leading OEMs and tiers engaged in the aerospace, oil and gas, lifting and excavating, automotive and bearing markets consuming engineering bar. Our manufacturing sites are approved to BS EN 9100:2008, AS9100/AS9120 and BS EN ISO 14001:2004.
We have a well-placed network of sites in Wolverhampton, Newcastle and Bolton. They are conveniently located, with excellent logistics, to service the UK market. Using our own transport fleet and working together with haulier partners, we offer nationwide next-day delivery for urgent orders – even for small or one-off orders.
Further Processing
In-depth industry knowledge
To save customers processing time and cost we offer:
Tata Steel service centres serve more than 6,000 individual customers each year. Our extensive experience of steel products, processing and applications can be utilised to support the development of your business.
• single- and multi-cut sawn to length quantities • a wide range of additional processing services, including boring, proof turning, precision turning, centreless grinding, heat treatment, mechanical testing, ultrasonic/MPI (magnetic particle inspection) crack testing
Bright Carbon/Alloy Bar
Black Carbon/Alloy Bar
Round Bar
080A15(EN32)/070M20(EN3A/EN3B)
Round Bar
070M20 (EN3A/EN3B)
080M40(EN8)/080A42(EN8D)
S355J2
210M15 (EN32M)
080M40 (EN8)
212A42 (EN8DM)
605M36 H&T (EN16 H&T)
230M07 (EN1A)
655M13 (EN36A/EN36B)
230M07Pb (EN1A Leaded)
708M40 H&T (EN19A H&T)
605M36 H&T (EN16 H&T)
709M40 H&T (EN19 H&T)
655M13 (EN36A/EN36B)
817M40 H&T (EN24 H&T)
Bolton:
708M40 H&T (EN19A H&T)
835M30 (EN30B)
817M40 H&T (EN24 H&T)
SAE 8620H
T: 01204 370999 F: 01204 396684 E:
[email protected]
Hitenspeed 45A
Turned Bar
Please contact your nearest sales office for more information:
832M13 (EN36C)
Hitenspeed 55
16MnCr5
ASTM A193 B7 / A320 L7
Forged Bar
070M20 (EN3A)
ASTM A193 B16
080M40 (EN8)
080A15 (EN32)/070M20 (EN3A/EN3B)
817M40 H&T (EN24 H&T)
080M40 (EN8)/080A42 (EN8D) 230M07 (EN1A)
Other Grades are available please call us for
Hexagonal
212A42 (EN8DM)
further information.
Bar
230M07 (EN1A)
Newcastle Upon Tyne:
T: 0191 414 1819 F: 0191 414 5235 E:
[email protected]
Wolverhampton:
T: 01902 875000 F: 01902 453307 E:
[email protected]
230M07Pb (EN1A Leaded) 605M36 H&T (EN16 H&T) Hitenspeed 55 Flat Bar
080A15 (EN32)/070M20 (EN3A/EN3B)
Square Bar
080A15 (EN32)/ 070M20 (EN3A/EN3B) 230M07 (EN1A) 230M07Pb (EN1A leaded)
Tata Steel Metal Centre – Engineering Bar Qualcast Road, Horseley Fields Wolverhampton WV1 3DY T: +44 (0)1902 875000 F: +44 (0)1902 453307 E:
[email protected] W: www.tatasteeleurope.com English Language TSDUK01:PDF:UK:10/2015 Tata Steel Document Title
www.tatasteeleurope.com While care has been taken to ensure that the information contained in this publication is accurate, neither Tata Steel Europe Limited, nor its subsidiaries, accept responsibility or liability for errors or for information which is found to be misleading.
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