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Home Material GB /T 24588-2019
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Grade 07Cr17Ni7Al
China ISC S51770
Old Grade
Corresponding Standard GB /T 24588-2019
Stainless Steel Wires for Spring
Classification Precipitation-Hardening Stainless Steel
Properties Elasticity Corrosion Resistance
Density 7.93 g/cm3
07Cr17Ni7Al Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Al
Minimum Value - - - - - 16 6.5 0.75
Maximum Value 0.09 1 1 0.04 0.03 18 7.75 1.5
07Cr17Ni7Al Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Cold Drawn Steel Wire; d < 0.2 Group C
≥1970
Cold Drawn Steel Wire; 0.2 ≤ d < 0.3 ≥1950
Cold Drawn Steel Wire; 0.3 ≤ d < 0.4 ≥1920
Cold Drawn Steel Wire; 0.4 ≤ d < 0.5 ≥1900
Cold Drawn Steel Wire; 0.5 ≤ d < 0.63 ≥1850
Cold Drawn Steel Wire; 0.63 ≤ d < 0.8 ≥1820
Cold Drawn Steel Wire; 0.8 ≤ d < 1 ≥1800
Cold Drawn Steel Wire; 1 ≤ d < 1.2 ≥1750
Cold Drawn Steel Wire; 1.2 ≤ d < 1.5 ≥1700
Cold Drawn Steel Wire; 1.5 ≤ d < 1.6 ≥1650
Cold Drawn Steel Wire; 1.6 ≤ d < 2 ≥1600
Cold Drawn Steel Wire; 2≤d<2.5 ≥1550
Cold Drawn Steel Wire; 2.5 ≤ d < 3 ≥1500
Cold Drawn Steel Wire; 3 ≤ d < 3.5 ≥1450
Cold Drawn Steel Wire; 3.5 ≤ d < 4 ≥1400
Cold Drawn Steel Wire; 4≤d<4.5 ≥1350
Cold Drawn Steel Wire; 5 ≤ d < 6 ≥1300
Cold Drawn Steel Wire; 6 ≤ d < 7 ≥1250
Cold Drawn Steel Wire; 7 ≤ d < 8 ≥1200
Cold Drawn Steel Wire; 8 ≤ d < 10 ≥1150
Sample; d < 0.2 Aging 2270~2610
Sample; 0.2 ≤ d < 0.3 Aging 2250~2580
Sample; 0.3 ≤ d < 0.4 Aging 2220~2550
Sample; 0.4 ≤ d < 0.5 Aging 2200~2530
Sample; 0.5 ≤ d < 0.63 Aging 2150~2470
Sample; 0.63 ≤ d < 0.8 Aging 2120~2440
Sample; 0.8 ≤ d < 1 Aging 2100~2410
Sample; 1 ≤ d < 1.2 Aging 2050~2350
Sample; 1.2 ≤ d < 1.5 Aging 2000~2300
Sample; 1.5 ≤ d < 1.6 Aging 1950~2240
1 Approximate Comparison Table Precipitation Hardening Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST
07Cr17Ni7Al
(0Cr17Ni7Al) 		S51770 631 SUS 631 STS 631 631 S17700 X7CrNiAl 17-7
2
(ISO 683-13-1986) 		X7CrNiAl 17-7 1.4568 Z8CNA 17-07 X7CrNiAl 17-7 1.4568 09Х17Н7Ю
2 Approximate Comparison Table Precipitation Hardening Heat-Resistant Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST
07Cr17Ni7Al
(0Cr17Ni7Al) 		S51770 631 SUS 631 STS 631 631 S17700 X7CrNiAl 17-7 X7CrNiAl 17-7 1.4568 Z8CNA 17-07 X7CrNiAl 17-7 1.4568 09Х17Н7Ю
07Cr17Ni7Al Corresponding Standards(Same grade name, different standards)
1 GB /T 20878-2007
07Cr17Ni7Al S51770 (0Cr17Ni7Al)
2 GB /T 1221-2007
07Cr17Ni7Al S51770 (0Cr17Ni7Al)
3 GB /T 1220-2007
07Cr17Ni7Al S51770 (0Cr17Ni7Al)
4 GB /T 4356-2016
07Cr17Ni7Al S51770
5 GB /T 4239-1991
07Cr17Ni7Al S51770 (0Cr17Ni7Al)
6 GB /T 3280-2015
07Cr17Ni7Al S51770
7 GB /T 4238-2015
07Cr17Ni7Al S51770 (0Cr17Ni7Al)
8 GB /T 4237-2015
07Cr17Ni7Al S51770
9 GB /T 24588-2019
07Cr17Ni7Al S51770 (0Cr17Ni7Al)
10 GJB 8268-2014
07Cr17Ni7Al S51770 (0Cr17Ni7Al)
11 GB /T 20878-2024
07Cr17Ni7Al S51770 (0Cr17Ni7Al)

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